KHOA HOC CONG N G H E
KET QUA CHOIV TAD VA KHAO MGHIEM GIOIMG LLJA DIVI4B9
Nguygn Khac Thdng^ Nguyin Thiiy Kilu TignS Tran Nggc ThachS Tran Dinh Gioi^
T6MTAT
Gi6ngOM429do V{§n Liia dong bang song Cim Ixjng chon tao tu to hop laiOM5451*2/FL478 tir TO he tbu 2011, Sau do duoc danh gia va chon lpc qua nhieu the he va tham gia vao mang luoi khao nghiem VCU tii vu dong xuan 2016-2017. Kbao nghiem ca ban cbo tbay, gidng liia OM429 dat nang suat frung binh la 5,75 tan/ha tuong duong voi nang suat trung binh ciia gidng ddi cbiing OM5451 (5,81 tan/ha), gidng cd ham lutmg amylose thap (18%), hat gao thon dai, mat gao dep, ty le gao nguydn cao (65,7%). Khao ngbiem san xuat qua bai vu dong xuan 2017-2018 va he tbu 2018 gidng OM429 dat nang suat trung binb 5,24 tan/ha tuong duong vdi nang suat trung binb ciia gidng ddi chung tai cac diem khao nghiem (5,24 tan/ha). Ket qua thanh loc kba nang chdng cbiu man cho tbay gidng liia OM429 bieu hien kha nang chdng chiu man tdt khi nhi§m man a ndng do mudl 6%Q va cho nang suat vugt troi (tang 14,12%) hon gidng ddi chimg OM5451 tai diem xam nhilm man Tran Dg, Sdc Trang. Gidng duoc Cue Trdng trot, B6 Nong nghiep & PTNN cong nhan san xuat tbii tai viing ddng bang song Cuu Long theo Quyet dinh sd 333/QD-TT-VPPN ngay 14 thang 10 nam 2019.
Tirkhda: Chdng chia man, gidng lua 0M429, tbanh Igcman.
LDATVANDE
Hi6n hiong bien ddi khi hau dang diln ra nhiing nam gan day keo theo nhieu nguy cff tiem in cho virng dong bang song Ciiu Long ^BSCL) nhu hien tucmg xam nhap man, nhigm phen va ban (Vi^n Khoa boc Thuy lgi mien Nam, 2019). Viec chuyen canh m6t sd gidng nhu: IR50404, OM5451, OM6976... ve lau dai se din tdi hien higng thoai hoa gidng va suy giam kha nang chdng chiu vdi dich hai tii dd anh hudng nghidm trong tdi san xuat liia va lpi nhuan cua ngudi san xuat Vi vay viec da dang hda gidng lua la mot nhu cku tat yeu de dam bao san xuat dupe lau dai va ben viing, de dap ling dugc y6u cau de ra cac gidng mdi chon tao can duoc bd sung cac tinh trang dac biet so vdi cac gidng liia dang tdn tai trong san xuat nhu: tang cudng kha nang cbdng chiu man, mgt sd ddi hrong dich hai chinh...
Xuat phat ttr nhiing nhan thiic tren, gidng liia OM429 da dugc chon tao vdi muc tieu duy tri dac tinh tdt cua gidng me OM5451 nhung dugc bd sung them kha nang chdng chiu man tu gidng F1^78; ket qua dat dugc la gidng liia mdi OM429 cd tiem nang nang suat, pham chat gao va klia nang thich nghi tuang duong vdi gidng OM5451 nhtmg dugc bd sung them kha nang chdng chiu man vi vay giong liia OM429 dk dang dugc san xu^t chap nhdn va thfch
' Vien Lua ddng bang song Cim Long
nghi rgng v6i dieu kien canh tac khu vuc DBSCL tir viing phu xa nggt cho den vimg bi nhilm phen, man.
2 . VAT UEU VA PHUONG PHAP NGHIEN CUU 2.1. V^t li$u nghien ciiu
Gidng Ilia OM429 dugc chgn tao hi td hgp lai hdi giao giua gidng liia cao san, chat lugng cao OM5451 va gidng liia FL478 chdng chiu man tdt, cd ngudn gde tir Vien Nghien ciiu Liia Qudc td. Gidng ddi chiing OM5451, OM6976, FL478 va Pokkali su dung cho tung muc tieu nghien ctm khac nhau.
2.2. Phucmg phap nghifin cuu
• Gidng Ilia OM429 dugc chpn tao tbeo phuong pbap pha he tii to hpp lai hoi giao OM5451*2/FL178 theo htrdng n g ^ ngay, nang suat cao, cbdng chiu man tdt tbich bpp sinh thai viing ddng bang sdng Cuu Long.
• Chi tieu nong hgc dugc danb gia theo tieu ebuan cua Vien Nghien cuu Liia Qudc te (IRRI, 1996).
• Tbanh lgc man nhan tao: Ap dung tbeo quy trinh tbanh lpc man giai doan ma ctia Vien Nghien Cliu Lua Qudc te nam 1996 ORRI, 1996).
• Khao nghiem cff ban, khao nghiem san xuat va khao nghiem tai diem nhilm man dugc thuc hien theo "Qui pham khao ngbiem gia tri canh tac va sir dung ciia gidng lua" (QCVN 01-55: 2011/BNN) do Bd Ndng nghiep va PTNT ban hanh ngay 5 thang 7 nam 2011 tai vtmg DBSCL.
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 12/2019
- Tbu thap ehi tieu: Nang suat liia duoc tbu tr^n khung 5 m^. Mlu liia duoc cat va dap bang tay, phoi kho, loai bd bat lep lung, do am do va can khdi lugng rdi quy nang suat ve am do chuan 14%.
- Xu H sd lieu: Sd lieu dupe xu li thong ke bang pban mem CropStat 7.20, Excel va SPSS 22.
2.3. Thin gian v^ dia di^m nghidn cihi - ^rhdi gian nghien ciiu: Nghien etiu thuc hien tu vu he thu 2011 den vu he thu 2018.
- Dia diem nghien ciiu: tai cac tinh An Giang- Kien Giang, Can Tha, Long An, Sdc Trang, Vinh Long va Tien Giang.
3 . KET QUA VA THAO LUAN
3.1. K^t qua chgn ddng phan ly cac thd he Ddng Iai cac the he dugc danh gia cac iinh trang chdng chiu man, tbdi gian sinb trudng va nang suat, mdi the he chon 20 ca the tdt nhat ve cac tinh frang muc tieu phat trien a cac the he sau. O the he BC1F7 chgn 1 ddng thuan cd nang suat cao nhat dua len khao nghiem tac gia (Bang 1).
Bang 1. K^t qua chgn ddng cac th^ hd The he
F,-BCiFi BCiFrBCiFg BCiF4-BC]Ffi BC1F7
Tinh trang chon loc
Danh gia tinh trang chdng chiu man Chon ca the ngan ngay, chdng cbiu man Chon ddng ngSn ngay, nang sujit eao Chgn ddng thuan, ngan ngay nang suat cao, dang hinh dep
Sd luang chon/the he 20 ca the 20 cathe 20 cathe Chon 1 ddng thuan, nang suat eao nhat phat trien thanh OM429
3.2. Khao nghidm tac gia
Khao nghiem tac gia bao gom tbi nghiem so sanh sa khdi, thi nghiem so sanh hau ky va tbi nghiem khao nghiem sinh thai thuc hien tai dong bang sdng Cuu Long tic vu he thu 2015 ddn vu ddng xuan 2016-2017. Ket qua, ghi nhan nang suat trung blnh eiia gidng OM429 dat 5,46 tan/ha cao hon nang suat trung binh cua gidng liia OM5451 (5,32 tan/ha)
Bang 2. K^t qua khao nghidm tac gia gidng liia OM429
tiiffng ling 2,6% (Bang 2). Nhu vay, gidng liia OM429 trong khao nghiem tac gia dap iing tdt muc tieu dat ra, cd nang suat tuong duong va cao ban gidng liia OM5451 hien dang gieo trdng phd bien tai viing ddng bang sdng Ciru Long nhtmg dugc bd sung them kha nang chdng ehiu man nham dap iing tot vdi vung canh tac nhilm man cua khu vuc.
Ten khao nghiem Sakhoi Hauky Sinh thai Sinh thai
Vu He thu 2015 Bong xuan 2015-2016 He thu 2016 Dong xuan 2016-2017 Trung binh
Nang suat (tan/ha) OM429
4,20 6,34 5,27 6,02 5,46
OM5451 4,00 5,28 6,68 5.32
% Vugt trgi DC 5,0 -0,2 -9,9 2.6 3.3. Kh^o nghiem eg ban
Bang 3. Mpt so dac tinh nflng hgc cua gifag liia OM429 trong khao nghijm eg ban, nhgm^.
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG la/jQ,,,
KHOA HOC CONG NGHE
1 6 17 Vu don
19 20
O1M407 OM429 01M5451
100-105 95-100 97-102
100-110 95-105 95-105
260-290 280-310 280-310
70-80 7a«) 70-80
23,8 16,8 20,2
29-30 26-27 25-26
1 1 1 g xuan 2017-2018
OU42S OM5451
95-100 95-100
95-105 95-105
290-320 300-330
90-100 80-90
10-15 10-15
25-26 25-26
1 1 Khao nghiem ca ban gidng Ma OM429 tai vung
ddng bang sdng Cuu Long qua ba vu ben tuc tu vu ddng xuan 2015-2016 ddn vu ddng xuan 2016-2017 (Bill Ngoc Tuyen va etv 2016, Bui Nggc Tuyen va ctv 2017) ghi nhan gidng lua OM429 cd cac dac tinh nong hpc tuong duong vdi gidng Itia OM5451 cu thd nbu: gidng cd thdi gian smh trudng vdi liia cay tii 95- 100 ngay, chidu cao cay tir 95-105 cm, sd bdng/m^
280-320 bong, sd hat chac/bdng tii 70-100 bat va khdi luong 1000 hat bi 25-27 gram (Bang 3).
Nhu vay, tat ca cac cbi tieu nOng hoc cua gidng liia 01VI429 dugc ghi nhln gan lihu tuong duong vdi gidng Ilia ddi cbiing OM5451, didu nay ed dtrge la do gidng Ilia OM429 la con lai cua gidng lua OM5451 d- Bang 4. Nang suat (tan/ha) vk chdnh Idch nang suat
eg ban tai vimg
the he hdi giao thii nhat hic la gidng liia OM429 mang khoang 75% ndn di truydn cua gidng liia OM5451.
Ve nang suat, gidng liia OM429 qua ba vu khao ngbiSm ea ban dat nang suat trung binh 5,75 tan/ha thap ban nang suat trung binh cua gidng liia OM5451 (5,81 tan/ha) Urong tmg -1,05%. Su chenh lech vd nang suat khong ldn giira gidng tiia 01VI429 va gidng ddi chiing OM5451, mat khae ket qua khao nghiem co-ban ghi nhan su chenh lech cao nbat la tai vu he thu (thjip ban 3,80%), trong vu ddng xuan gidng Ilia OM429 va gidng lua OM5451 cd nang suat gan nhu tuong duong nhau (Bang 4).
iS) so vdi ddi chiing cua OM429 qua 3 vu Idiao nghidm sdng Cuu Long
Diem Long An Tien Giang An Giang Can Thg Kien Giang Trung binh vu Tien Giang An Giang Can Thg Kien Giang Trung binh vu Tien Giang An Giang Can Thg Kien Giang Trung binh vu
VuKN
Dgng xuan 2016- 2017 He thu 2017 Dong xuan 2017 2018
Trung binh 3 vu
OM429 6,47 4,74 6,20 6,06 7.49 6,19 4.03 5.13 4.46 5.12 4.69 6.19 5.81 7.30 5,77 6,27 5,75
01VI5451 6.82 5.69 6.43 6,30 5,81 6,21 4,52 5,42 4,63 4,91 4,87 5.25 6,38 7,46 5,94 6,26 5,81
LSD 0,05 0,52 0,79 0,44 0,95 1,42 0.22 0.52 0.58 0.8 1.15 0.81 0,66 0.85
Tang giam sg vgi d/c (%)
-0,29
-3.80
0.16 -1,05
NONG NGHIEP VA PHATTRIEN NONG THON - KY 2 - THANG 12/2019
Vd pham chat, ket qua phan tich pham chat gag trinh bay g bang 5.
Ciia gidng liia OM429 qua ba vu khao nghiem co ban
Bang 5. Ch^t lugng xav eha ciaa gigng liia OM429 trone khao ncrhi^
TT Gigng/
vu KNQG
Ty le xay xat {%) Gao
liic Gao trang
Gao nguyen
Gao tam
Kich thuge hat Dai (mm)
Rong (mm)
D/R Bac bimg
(%)
Vll ddng xuan 2016-2017 1
27 OM429 OM5451
80,1 79.3
69,1 68,9
63,9 59,8
5,9 9,1
6,50 1 6,85
2,10 2.02
3,1 3,4
1,9 3,7
Do trang
(%)
44,0 44.1 Vu he thu 2017
9 41
OIVI5451 01V1429
79.3 79,3
69,6 68,7
62,6 65,7
7,0 2,9
6.72 6,62
2.02 2,08
3.3 3,2
4,6 2,6 Vu ddng xuan 2017-2018
11 12
OM429 OM5451
80,0 79,9
68,2 68,2
39,6 51,2
28,2 17,0
6,47 6.93
2,00 1,87
3,2 3,7
3,0 4,7
47.6 54.4
35,6 35,0 Pham chSt gao: Gidng liia OM429 cho ty 16 thu
hoi gao cao, ly le gao liic hang vu (dat 79,3 -80.1%) bang va cao hon gidng doi chiing OM5451 (dat 79.3 - 80.0%): ty 16 thu hdi gao trang cua gidng OM429 bidn dgng tir 68.2 - 69.1% tunng duong voi OM5451 (68.2 - 69.6%); ty 16 thu hoi gao nguyen ciia OM429 la rat cao trong hai vu lien tidp ddng xuan 2017-2018 va he thu 2017 lan lugt la 63.9% va 65.7% cao hgn cua gidng OM5451 t o n g ciing vu lan lugt la 59.8% va 62,6%.
Trong vu dong xuan 2017-2018 ty 16 gao nguyen cua gidng OM429 bl giam dot nggt xudng 39,6% cd the la do mau phan tich cd am dp thap dan den ty 16 thu hdi gao nguyen thap. Gidng lua OM429 cd ty 16 bac bung rat thap bien ddng qua ba vu khao nghiem to 1,9 - 3,0%, ty le nay thap hon gidng ddi chiing OM5451 (3.7 - 4.7%); OM429 la gidng cd hat gag trang. dg trang hat gao cua gidng bien dgng to 35.6 - 54.4%
ludn cao hon dg trang hat gag cia gidng ddi chiing OM5451 (35,0 - 47.6%); gidng OM429 cd ty le D/R hat gag to 3.1 - 3.2 nen dugc xep vao dang hat gao thon dai. Nhu vay. vd pham chat hat gao qua ba vu khao nghiem eg ban cho thay OM429 la gidng Ilia cd pham chat hat gao rat tdt. hat gao dat Heu ehuan xuat khau.
Pham chat com: OM429 la gidng liia thudc nhdm com deo (ham lugng amylose = 18%). com mdm khi de ngudi (do ben the gel dat 81.5 mm).
Trong khi dd gidng ddi chung OM5451 chi thuoc
nhdm com mem (ham Iirong amylose = 20.5%) (Bang 6). Nhu vay ve pham chat nau nudng. OM429 cd pham chat tdt hgn hin gidng ddi chiing OM5451.
Bang 6. Phdm ch^t com cua gidng liia OM429 trong bp khag nghidm eg ban vu ddng xuan 2017-2018 TT
1 11 12
Ten gidng OM435 OM429 OM5451
Dp trg hd (cap)
2,0 2,0 1,0
Ham lugng amylose
(%)
15,8 18,0 20,5
Dp ben gel (mm)
80,0 81,5 86,5
Miii thgm (cap)
3.4. Khao nghidm san xu^t
Gidng Ilia OM429 dugc khao nghidm san xuat 2 vu dong xuan 2017-2018 va he thu 2018, bp gidng Itia ddi ehiing su dung la gidng liia OM5451 va OM6976 (Vien Lila ddng b^ng song Cuu Long, 2018). Trong didu kien canh tac liia sa (ap dung vdi khao nghidm san xuat), gidng liia OM429 ed thdi gian sinh trudng tii 93 den 100 ngay ngSn ban gidng ddi chiing OM5451 tir 0 den 4 ngay va ngan ban gidng lua ddi chiing OM6976 la 8 ngay. Ve nang suat, gidng liia OM429 dat nang suat trung binh qua hai vu khao nghiem 5,24 tan/ha tuong duang vdi nang suat tmng binb eua ca 2 gidng ddi chiing (Bang 7).
N O N G NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 12/2019
KHOA HOC CONG NGHE Bang 7. Thdi gian smh trudng vk nSng su^t cua
gidng Ilia OM429 va ckc gidng ddi chiing trong khao nghifem san xuat
Diem khao nghiem
An Giang Soc T r a n g C i n T h o Vinh Long Can T h o An Giang Soc T r a n g Tien Giang
Vu khao nghiem
bo G
Thoi gian sinh trucmg (ngay)
O
s
93
94
95
95
100
93
95
100
T r u n g binh 2 vu O 5
95
98
98
100
97
95
100 O S
CT) ID CTI
102 Chenh
lech
-2
8
3
-3
0
-4
0
0
Nang suat thuc thu (tan/ha)
O
1
to 5.76
5.27
5.93
6.47
4.13
4,64
5.56
4.19
5,24 Ddi chiing (OM5451 OM6976) 5.64
4.99
6.13
6.76
4.5
4.43
5.31
4.18
5.24 Tang giam so vol d / c
m
2.1
5.6
-3.3
-4.3
-8.2
4.7
4.7
0.2
0,0
Bang 8. Kdt qu^ thanh lpc kha nang chdng chiu man cua tap d o ^ cdc gidng liia thu th&p nSm 2017, Vi^n
Lua DBSCL
3.5. Danh gia kha nang chdng chiu man cua gidng Ilia OM429
3.5.1. Ddnh gia kbd nang chdng cbiu man trong dieu kien nhan tao
Nam 2017, Vien Lua DBSCL da tien hanh thanh Igc kha nang chdng ehiu man aia 100 gidng Itia cao san thudc tap doan cac gidng liia thu thap trong nude va nhap npi nham tim ra nhiing gidng lua cd kha nang chdng chiu man tdt nhat pbuc vu eho muc tieu lai tao va thanh lap bg gidng cao san chiu man de khao nghiem tai cac viing sinh thai nhidm man cua khu vuc DBSCL (Nguydn Khac Tiiang, 2017). TTii nghiem thanh loc man dupe thiet ke gdm 2 nhan td: gidng va dp man (6%o va 8%o), ket qua thanh lgc giai doan ma frong dieu kien lay nhidm nhan tao dupe trinh bay d bang 8.
T T
1
3
11
15
32 3 3
8 6 87
97
100
Ten dong/gidng
IR15T1387 PokkaH (ehuan chdng ehiu)
OM429 F U 7 8 Capsule IR15T1132
IR15T1426 IR15T1185
OM5451 (ddi ehung) RC222 (chuan nhidm)
Kha nang chdng chiu (cap) 6%o 4,5 4.5
4,5 5,5
7,0 5,5 8,5 7,5
8,5 9,0
8%.
4,0 4.0
6,0 5,5
5,0 7,0 7,5 9,0 8,5 9,0 P-value (gidng)
P-value (do man) CV(X}
LSD 0,01 (gidng) LSD 0,01 (do man)
Trung Binh 4,25 4,25
5,25
5.5 6.0 6,25
8,0 8,25 8,5
9,0 0,00 0,00 18,7 1,77 0,25
> Ket qua d bang 8 cho thay: Kha nang chong chiu man eua bd gidng: Gia tri P-value (gidng) = 0,00
<0,01, nghia la gitia cac gidng thanh lgc khac nhau thi kha nang chdng chiu man dtrac khang dinh la khac nhau d dd Un cay 99%. Gia tn LSD 0,01 (gidng)
=1,77, gia tri nay giiip phan cap kha nang chdng chiu man trung binh ciia bd gidng thanh ba nhdm neu chiing ta l^y gidng chuan chong chiu Pokkali la tieu chuan de phan cap:
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 12/2019
Nhdm 1: Cac gidng cd eap chdng chiu ttr 4,25 ddn 6,0 gdm cac giong cd kha nang chong ehiu man tdt nbu Pokkali (chuan chdng cbiu man, cap 4,25), gidng FL4:78 (chuan ehdng chiu man, cap 5,5), gidng OM429 cd cap chdng cbiu man la 5,25 nen thudc nhdm ed kha nang chdng chiu man cao.
Nhdm 2: Cac gidng cd cap chd'ng chiu tii 6,25 ddn 8,0 la nhiing gidng cd kha nang chdng chiu man kem.
Nhdm 3: Cac gidng cd cap chdng chiu tii 8,25 den 9,0 la nhung gidng rat man cam vdi man bao gom gidng OM5451, gidng ehuan nhilm qudc te RC222...
Nbu vay ve kha nang chdng chiu man giai doan ma, OM429 bieu hien kha nang chdng chiu man tdt hon hin so vdi gidng ddi chiing OM5451.
> Anh hudng eua ndng do man den kha nang chdng chiu cua gidng OM429: Gia tri P-value (dd man) =0,00 <0,01, chimg td miic dd nhiem man khac nhau cd anh hudng ro ret den kha nang ehdng ehiu man cua bg gidng lua tham gia tiij nghidm a do tm cay 99%. Tir gia gia ti-i LSDO.Ol ciia do man (0,25), cd the nban thay d nong do nhiem man 6%o va 8%o kha nang ehdng chiu man ciia gidng Pokkali, FL478, IR15T1112 khdng cd su khac bidt. Tuy nhidn d gidng lua OM429 cd su suy giam kha nang chdng chiu man khi dd nhidm man thay ddi tir 6%o (cap 4,5) len 8%(.
chiu man tdi da la 6%o, cac gidng ehu& chdng chw nhu Pokkali va FL478 cd kha nang chdng chiu man len tdl 8%o ti-ong ciing didu ki^n Ihi ngbiem.
3.5.2. Danb gia kba nang cbdng chiu man dong dieu kien xam nhiim mSn
Huyen Tran De, tinh Soc Trang la diem tbudng xuydn bi anh hudng cua hien tupng xam nhiSm man vao cudi vu dong xuan (khoang tii thang 2 den thang 4 duang lich hang nam), vu ddng xuan 2016-2017 bg gidng khao nghidm man dugc tien hanh tai huyen Tran De, tinh Sdc Trang ©mh Vu Thiiy Duong, 2017) nham danh gia kha nang chdng chiu man trong dieu ki6n thuc tidn ciia ngudn vat Heu. Gia tri kha nang trao ddi ion va gia tri do man eua dat va nude tai diem khao nghiem dugc ghi nhan d bang 9.
Kha nang trao doi cation trao ddi trong dat d' dau vu rat thap (8,40 meq/100 g) nbung gia tri nay tang iSn 21,10 meq/100 g d giiia vu va 20,80 meq/lOD g d" cudi vu. Dieu nay duoe giai thieh la do anh hudng su xam nhap man giai doan liia trd ddn chin da anh hudng den tinh chat dat thi nghidm. Gia tri dp man mka nude cho thay dat thi nghiem bi anh hudng cua hien tugng xam nhiem man vao giai doan cay liia tit trd den chin (dp man tir 3,7-4,0%o), tuy nhien hien tugng xam nhi&m man nay chua kip gay anh hudng tdi gia tri dp man cua tang dat canh tac nhung anh hudng rat ldn ddn ty le vao chae cua cae gidng liia tbi nghiem (Bang 9).
(cap 6,0) didu nay chiing td OM429 chi ed kha nang
Bang 9. Kdt qua phan tich mku dat, nuoc thi nghiem vu BX 2016-2017 tai Tran Dd, Sdc Trang
snr
1 2 3 4 5 6 7
Chi tieu danh gia
P H H 2 0 Dgman(%o) Ca2-i-(meq/100 g) Na-i-(meq/100 g) Mg2-i(meq/100g) K+(meq/100 g) CEC (meq/100 g)
Man dat Dauvu
5,16 0,7 1,83 0,83 2,38 0,67 8,4
Giuavu (trd) 5,63
0,5 L 0,5
7,93 8,77 0.72 21.1
Cudivu 5.42
0,5 0,53 7,18 7,96 0,7 20,8
MSu nugc Dauvu
6,05 0,3 4.34 96.02 29.33 30.94
Giua vu (n-6) 5.94
4,0 5 94 28 31
Cudivu 6.01
3,7 4,8 92,08 27,29 30,03
-
Ket qua danh gia dac tinh ndng hpc, nang suat gbang 10. Gidng OM429 cd thoi gian smh hudng va cac thanh ph4n nang suat eua gidng liia OM429 ngay, ngan hon gidng OM5451 (105 ngaj) 1-, 7 trong bd gidng Ilia khao nghiem man duoc ghi nhan sir chenh lech nay rat ed y nghia trong die^ yj^^
canh tac Ait hi nhidm man vi nd giiip giam thieu rui NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 12/20]9
KHOA HOC CONG NGHE
ro cho ngudi canh tac. Do anh hudng cua hien tugng xam nhidm man nen bo gidng thi nghidm bi anh hudng rat lan tdi ty 16 vao chac, cac gidng lua cd ty le lep rat cao bidn dong tii 35,2 ddn 78,1%. Gidng liia OM429 cd ty It hat lep la 44,5% thap ban so vdi gidng
ddi chiing OM5451 (50,2%). Ve nang suat, gidng liia OM429 trong dieu kien xam nhilm man dat nang suat 3,96 tan/ha diing thii 5 trong tdng sd 20 gidng tham gia khao nghiem, cao hon nang suat cua gidng ddi chimg OM5451 (3,47 tan/ha) tirang ling 14,12%.
B ^ g 10. Kdt qua danh gid dac tinh ndng hgc, nang suat va ckc th^nh phan nang su^t cac gidng liia khao nghidm man tai Tran Dd, Sdc Trang vu DX 2016 - 2017
STT 1 5 11 20
Ten gidng OM242 OM429 OM5451 OM357
Foos CV(%)
TGST (ngay) 102 98 105 102
Chdc /bdng (hat) 59,5 b 54,7 be 50,9 b-e 37,6 de 16,8
*
Ty Id lep
(%)
48.8 ghi 44,5 ij 50,2 f-i 60.7 b-f
10.3
*
NSTT (t/ha) 4.25 a 3,96 ab 3,47 b « 2,77 f 9,3
*
Chdnh lech nang suat sovdiOM5451(%)
22.48 14,12 -20.17
Gbi chd- Trong cting I cdt cac chd sdco ciing ki tu theo sau khac biit khdng cd y ngbia vi mat thing ki;
Trung tam Khao kiem nghiem Gidng, San pham cay trong Nam bp.
2. Biii Ngpc Tuyen, 2017. Bao cao kit qua khao ngbiem gidng lua vu he thu 2017 d Nam bd, Trung tam Khao kiem nghiem Gidng, San pham cay trdng Nambp.
3. Bui Ngoc Tuydn, 2018. Bao cao ket qua khdo nghiim gidng liia vu ddng xuan 2017-2018 a Nam bd, Trung tam Khao idem nghiem Gidng, San pham cay trdng Nam bd.
4 . KET LUAN VA HE Nem 4.1. K^t lugn
- Gidng Ilia OM429 ed nang suat thuc tbu tuong duong vdi gidng liia OM5451 trong khao nghi6m VCU tai eac vimg phii sa ngpt cua khu vue ddng bang song Cim Long nbung cd ph£m ch^t gao va chat lugng com tdt hon han gidng ddi chiing.
- Gidng Ilia OM429 bieu hien kha nang chdng chiu man tdt ban gidng ddi ehiing OM5451. Kha nang chdng chiu man trong dieu kien lay nhidm nhan tao cua gidng OM429 la 6%o va trong dieu kien san xuat khi dat bi xam nhi§m man d do man 4%o gidng cd nang suat vuot trdi ban gidng OM5451 la 14,12%.
4.2. Dd nghi
Dua gidng lua OM429 vao ca cau gidng ciia viing ddng bang sdng Cuu Long, tap tnmg pbat bidn a cac viing canh tac liia ven bien nham nang cao gia tri canh tac liia.
TAI UEU THAM KHAO
1. Bill Nggc Tuyen, 2017. Bao eao kit qua khao nghiem gidng Ilia vu dong xuan 2016-2017 a Namhb,
4. Dinh Vu Tbiiy Duong, 2017. Kit qud khdo nghiim man bd gidng lua cao sdn tai huyin Tran De, tinb Sdc Trang. Vien Liia dong bang sdng Ciru Long.
5. IRRI (1996). Standard Evaluation System for Rice. 4th edition.
6. Nguydn Kbac Tbang, 2017. Ket qua thanb lpc man nhan tao bd gidng lua cao san. Vien Lua ddng bang sdng Ciiu Long.
7. Vien Khoa hgc Thuy lgi mien Nam, 2019.
Bao cao du bao ngudn nuoc, xam nhap man miia khd nam 2018-2019 va de xuat giai phap chdng han vtmg ddng bang sdng Ciiu Long.
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 12/2019
8. Vien Liia ddng bang song Cuu Long, 2018. 9. Vien Lua ddng bing sdng Cuu Long, 2018.
Kdt qua khao nghiem san xuat cac gidng liia cao san Ket qua khao nghiem san xuat cac gidng lua cao san vu dong xuan 2017-2018. vu he thu 2018.
THE RESULTS OF BREEDING AND TESTING THE OM429 RICE VARIETY Nguyen Khac Thang, Nguyen Thuy Eeu Tten,
Tran Ngoc Thach, Tran Dmh Gioi Summary
OM429 was selected by Cuu Long delta Rice Research Institute from OM5451*2/ FL478 bybnd from summer-autumn season 2011. Tben, It was evaluated and selected for many generations and participated in the VCU testing network from season of wmter-spnng 2016-2017. The basic testmg showed that OM429 nee with an average yield of 5.75 tons/ba is equivalent to tbe average yield of the control variety OM5451 (5 81 tons/ha), the variety bas a low amylose content (18%), the percentage of whole nee ranges is great (65.7%) The production testing over season of wmter-spnng 2017-2018 and season of summer-autumn 2018 of OM429 rice variety achieved an average yield of 5.24 tons/ba, equivalent to average yield of tbe confrol variety at the test sites (5.24 tons/ha). The result of saline tolerant screening showed that OM429 rice variety exhibited good sahne tolerance at 6%o salt concenfration and gave supenor yield (upto 14.12%) than OM5451 confrol variefy at saline point of Tran De distnct, Soc Trang provmce. The rice variety was certified as a frial production by Department of Crop Production, Ministry of Agricultural and Rural Development m Cuu Long delta region under Decision No. SSS/QD-TT-VPPN dated October 14,2019.
Keywords: SaUne Tolerance, 0M429Rice Vanety, Saline Tolerant Screening.
Ngudi phan bi^n: GS.TSKH. Tran Duy Quy Ngdy nhan bai: 18/10/2019
Ng^y thdng qua phan bien: 19/11/2019 Ngdy duyet dang: 26/11/2019
