NGHIEN CU'U VA XAY DU'NG CONG NGHE BAO QUAN HOA HONG DO PHAP SAU THU HOACH
Nguyin Tdt Thdng\ Biii Kim Thuy\ Nguyin Tiln Nam!
Trdn Thj Hao\ Trdn Thj Mai\ Le Thu Hdng\ Vu Kim Thoa\
Nguyin Van Nguyen\ Nguyin Trung DQng\ Trdn Van Tudn^, Ph?m Ngpe Minh' Wien Co dien ndng nghiep & Cdng ngh§ sau thu ho^ch 'Cuc Che bien va Thuong mai ndng lam thdy san va nghe muoi
^Trifdng Dai hoc Ndng nghiep Ha Ngi
Tom tat
Da sdn xudt duac chi phdm hdo qudn hoa hdng do Phdp BQH cd thdnh phdn: 6% saccaroza, 300 ppm AhiSO^)}, 140 ppm MnSO,, 50 ppm AgNO,,, 500 ppm Na^SOj. 20 ppm GAs, 300 ppm 8-Hydroxylquinoline, 200 ppm TrixtonX 100,...), che phdm cdm Io hudng thu hoa hdng CLH co thdnh phdn: 2% dudng sacaroza, 20 ppm GA3, 200ppm 8-Hydroxyquinoline. Dd xdy dimg duac cdng nghe bdo qudn hoa hdng dd Phdp dan gidn, de dp dung, chi phi phu hpp vdi dieu kien ciia ndng hp sdn xudt vd kinh doanh hoa tgi cdc dia phieang. Cdng nghe bdo qudn hoa cho thdi gian bdo qudn hoa tie 20 - 25 ngdy, tdn that sau bdo qudn < 5%. Tudi thp cdm Io hudng thu cua hoa hdng dd Phdp sau bdo qudn ldn han 96 h.
Tie khoa: Bdo qudn hoa cdt, che phdm bdo qudn hoa cdt, bdo qudn hoa hdng.
I. OAT V A N o e
Hien nay, phuang phap bao quan hoa thdng dung nhdt la dung nhiet dp thdp fte che boat ddng sinh Iy cua hoa sau thu hoach. Ddi vdi hoa hdng dd Phap nhiet dp tdi thich cho bdo quan lanh la 2-5"C. Cd nhieu budc xft ly va hda chat dugc sft dung vdi hoa cat. Cd ba thanh phan chinh la chat Iam axit hda dung djch (diing axit citric dieu chinh pH nudc bao quan), chat dinh dudng (dudng saccaroza), chat sat trung (nhu 8-HQC, 8-HQS, Physan-20) va chdt hdp phu ethylene (thiosulfate bac, AgNOa). Mdt dung djch bao quan hoa dien hinh cd chfta 0,5-2%
dudng an, mdt chat sat trung (HQC-hydroxy-quinoline-citrate hodc hdn hgp chdt amon bdc 4) va khoang 300 ppm axit xitric. HQC va axit xitric deu cd tac dung lam gidm pH cfta dung djch.
Mdt sd hda chat khae cung dugc phdi hgp bd sung vao dung djch nhu Al2(S04)3, phen chua. Cac chat ndy cd tac dung Iam lang cac tieu phan la Iftng trong nudc va lam gidm pH, chat gidi phdng do cham va chat dieu hda sinh trudng GA3 cung dugc sft dung. Qua trinh gia hda cua hoa dien ra rat nhanh khi chiing tiep xuc vdi dii la mdt lupmg rat nhd ethylene. Xft Iy hoa vdi thiosulfate bac lam giam hieu ftng ciia ethylene ke ca ndi sinh va ngogi sinh, cd tde dung fte che cdc thu cam ethylene cua hoa. Do vay nghien cftu tim ra cdng nghe bao quan hoa dan gian, dl dp dung, chi phi phu hgp vdi dieu kien kinh te cua ndng hd san xudt va kinh doanh hoa tgi cdc dja phuang la viec lam rat can thiet va day cung la muc tieu cua nghien cftu nay.
II. VAT LIEU VA PHU'aNG PHAP 2.1. Vat lieu
Hoa hdng dd Phap dugc thu hoach vao luc sdng sdm; hoa dugc trong d Tdy Tim - Tir Liem, Me Linh - Ha Ndi.
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2.2. Phifcng phap nghien CLFU
- Nghien cftu dnh hudng cua viec xft ly dung djch dudng trudc bdo qudn din chdt lugng vd tudi thp cfta hoa: Hoa dugc cdm 24 h trong dung djch dudng Sacaroza khdc nhau (0,5 ; 1, 2, 3, 4, 5, 6, 7, 8%) d 25°C, sau dd dugc bao qudn khd d 2''C dp dm 80 - 90%. Chi tieu theo ddi: chdt lugng vd tudi thg cua hoa. Bd tri thi nghiem 10 bdng boa/cdng thfte, nhde lgi ba Idn.
- Nghien cftu dnh hudmg cua Al2(S04)3, MnS04, AgN03, 8-HydroxylquinoIine, TrixtonX 100 GA3 trong dung djch dudng xft ly hoa trudc bdo quan lanh din chdt lugng cua hoa: Hoa dugc cdm 24 gid d 25''C trong dung djch saccaroza 6%, pH = 4 vdi ndng dp cdc chdt khdc nhau, sau dd dugc lam lanh sa bd 5''C, bd, bao gdi bdng mdng LDPE 0,01mm, ddng hop cacton, bdo qudn khd d 20°C RH 80 - 90%. Chi tieu theo ddi: chdt lugng va tudi thp cua boa. Bo tri tbi nghiem 10 bdng boa/cdng thfte, nhde lgi ba Idn.
- Nghien cftu dnh hudmg cfta dudng, GA3, 8-HydroxylquinoIine xft ly hoa sau bdo qudn Ignh den chat lugng vd tudi thp cdm Ip ciia hoa: Hoa sau khi bdo quan lanh dugc cdm 24b trong dung djch dudmg, GA3, 8-HydroxyIquinoIine vdi cac ndng do khdc nhau d 20''C. Ddnh gid cdc chi tieu vl chdt lupmg vd tudi thp cua hoa. Bd tri thi nghiem 10 bdng boa/cdng thfte, nhde lgi baldn.
- Nghien cftu anh hudng cua che pham bdo qudn, chl phdm cdm Ip hudng thu din chdt lugng cua hoa: Hoa sau khi bao qudn lanh dugc cdm 24h trong chl phdm bao qudn vd chl phdm cam Ip vdi cac ndng dp khdc nhau d 20"C. Danh gid chi tieu vl chat lugng vd tudi thp cua hoa.
Bd tri thi nghiem 50 bdng boa/cdng thfte, nhde lai ba lan.
- Cac chi tieu theo ddi: Xae djnh ty le hoa nd, ty I? thdi hdng sau bdo qudn Sd bdng hoa nd, bj thdi hdng
Ty le hoa nd, thdi hdng (%) = x 100%
Tdng sd bdng boa
III. K^T QUA VA T H A O L U A N
3.1. Anh hu'O'ng cua xu' ly hoa tru'O'c bao quan d§n chit lu'O'ng va tuoi tho ciia hoa
3.LL Anh hirdng cua xu* ly dung dich duong truoc bao quan
Viec xft Iy hoa bang dung djch dudng saccaroza trudc khi bao quan Ignh Id rdt cdn thiet, bdi vi saccaroza de bj phdn gidi trong qud trinh hd hdp. De ban che cdc tac ddng cua cac enzym den qua trinh len men khdng cdn thiet, trdnh gidm dinh dudng cfta hoa trong qud rinh bdo qudn, cdn bd sung lupmg dudng saccaroza thich hgp nhdm cai thien chat lugng vd tudi thp cua hoa sau bdo qudn. Viec xft ly hoa bdng trudc khi bdo quan d ndng dp dudng saccaroza 6% cho chdt lugng vd tudi thp cua hoa dat cao nhdt:
+ Ty le hoa nd sau cdm Ip: sau 11 ngdy bdo qudn dat cao nhdt la 83,2% trong khi dd d cdng thfte ddi chftng la 32,2% - 34,7%.
+ Tudi thp cdm Ip trung binh ciia hoa sau 11 ngdy bao qudn Id 102 h; d cac ndng dp dudng xft ly khdc cho tudi thp cdm Ip ngdn ban tft 48 - 96 h.
3.L2. Anh hvong ciia Al2(S04)3, MnS04, AgNOs trong dung dich du'dng xu- ly hoa trvdc bao quan lanh den thd'i gian bao quan va tuoi tho ciia hoa sau bao quan
- CJ nong dp 300 ppm, Al2(S04)3 cho chdt lugng hoa bdo quan dgt cao nhdt. Tudi thp cdm Ip ftung binh cfta hoa sau 15 ngdy bdo qudn Id 96 h, cdn d cac ndng dp Al2(S04)3 khdc cho tudi thp cdm Ip tft 82 - 84 h, d cdng thfte doi chftng chi dgt 50 h. Ndng dp Al2(S04)3 thich hgp trong qud trinh bdo quan hoa Id 300 ppm.
- Ndng dp MnS04 trong dung djch dirdng saccaroza cho chat lugng hoa dat cao nhat la d 140 ppm. Tudi thp cdm Ip d cdng thfte thi nghiem la 102 b cao hom ca; cdn cdng thfte doi chftng chi dat 52 h. Ndng dp MnS04 thich hgp cho bao quan hoa hdng la 140 ppm.
- 0 ndng dp 50 ppm, AgN03 cho chdt lugng hoa dat cao nhdt. Tudi thp cdm Ip trung binh sau 15 ngay bao quan cao. mftc dp nhilm ndm, khudn thdp ban so vdi cdng thfte ddi chftng vd d cac cdng thfte khae; ty le hoa hdng thdp nhdt la 8,8%. Ndng dp AgN03 thich hgp cho bdo quan hoa hdng la 50 ppm.
3.L3. Anh hu'dng ciia NaSjOj, 8-Hydroxylquinoline, TrixtonX 100 trong dung dich du-o-ng xii- ly hoa tru-oc bao quan lanh din chSt lu-ong va tuoi thg cua hoa sau bao quan
- Ndng dp NaS203 d ngudng 500 ppm cho chdt lupmg hoa dgt cao nhdt. Tudi thp cam Ip trung binh sau 15 ngay bao quan cao, ty le hoa hdng thdp nhdt la 7,7%; trong khi dd d cdng thuc ddi chftng la 36,7%. Ndng dp NaS203 thich hgp cho bao quan hoa bdng la 500 ppm.
- Ndng dp 8-Hydroxylquinoline cho chdt lugng hoa dat cao nhdt d 300ppm. Tudi thp cam Ip trung binh sau 15 ngay bao quan cao ban so vdi cdng thfte doi chftng va d cac ndng dp khdc.
Ty le hoa hdng thdp nhdt la 7,0%; trong khi dd d cdng thfte ddi chftng ty le hoa hdng la 41,1%.
Ndng dp 8-Hydroxylquinoline thich hgp cho bao quan hoa hdng la 300 ppm.
- Ndng dp TrixtonX 100 d ngudng 200 ppm cho chdt lugng hoa dat cao nhdt. Tudi thp cdm Ip ciia hoa trung binh sau 15 ngay bao quan cao la 102 h. Ndng dp TrixtonX 100 thich hgp cho bao quan hoa hdng la 200 ppm.
3.1.4. Anh hu-dng ciia GA3 len bl mat la va hoa tru-oc khi xii- ly hoa bang dung djch dirong den chat lu-ong va tuoi tho ciia hoa sau bao quan
Xft ly hoa trudc khi bao quan lanh bdng GA3 d ndng dp 20 ppm cho chat lugng va tudi thp cua hoa sau bao quan cao ban ca. C) cdng thfte thi nghiem tudi thp cam Ip trung binh cua hoa la
108 h; trong khi do d cdng thuc ddi chftng la 48 b. Ndng dp GA3 thich hgp cho bao quan hoa hdng la 20 ppm.
3.1.5. Anh hu'ong ciia sy phoi hg-p giira dirong saccaroza, Al2(S04)3, MnSOa, AgNOj, NaaSOs, GA3, 8-Hydroxylquinoline, TrixtonX 100 trong dung dich xfr Iy hoa tru-ffc bao quan lanh den chat lirong ciia hoa sau bao quan
Tft nhung ket qua nghien cftu d tren, chiing tdi dua ra dung djch xft ly boa trudc khi bao qudn lanh nhu sau: Dung djch bao quan (BQH) gdm: 6% saccaroza, 300 ppm Al2(S04)3, 140 ppm MnS04, 50 ppm AgNOs. 500 ppm Na2S03, 20 ppm GA3, 300 ppm 8-Hydroxylquinoline, 200 ppm TrixtonX 100....
Xft Iy hoa hdng bang dung djch BQH trudc khi bao quan lanh cho chat lugng va tudi thp hoa sau bao quan cao ban so vdi ddi chftng: Khdng thdy nam benh xudt hien; hoa, la vdn xanh tuai, ty le tdn that thap (4,6%); tudi thp cam Ip trung binh cao (110,0 h).
Bang 1. Anh hirong cua dung djch xiy ly hoa truoc bao quan lanh din chdt lu'p'ng cua hoa sau bao quan
Cong thirc
Doi chimg Thi nghi#m
Chi tieu ddnh gid sau 15 ngdy bao quan 0 2°C, RH 80-90%
Miipc do nhilm ndm, khuan ++++++
-
Ty le vdng Id (%) 36,3
0,0
Ty le hoa hong (%) 45,5
4,6
Tuii thp cdm \<f trung binh {g\if)
48,0 110,0 Ghi chii: (-): Khong nhiem
174
3.2. Anh hu'O'ng cua phdi ho-p giu'a du'd'ng saccaroza, GA3 va 8-Hydroxylquinoline 6' pH= 4 xu' ly hoa sau 15 ngay bao quan lanh d§n chat lu'O'ng va tuoi tho cim Io cua hoa
3.2.1. Anh hu-ong nong do duong xir ly hoa sau bao quan lanh
De keo ddi thai gian cam Ip hudng thu ciia hoa, dung djch dimg dl cdm hoa cdn cd mdt lugng dinh dudng nhdt djnh giiip ndng cao sir song ciia hoa bdng viec tieu bao nang lugng dir tru trong cdc bdng hoa. Khi qud trinh nd dien ra, d md tl bao ciia canh boa cd thanh phdn ciia enzym invertase, enzym ndy ludn boat ddng, giup hoa nd tuai, dep trong thdi gian cdm Ip. Viec sft dung ket hgp trong dung djch cdm boa chat dinh duang va pH thich hgp giiip cho hoa tuoi dep, bin lau trong thdi gian cam Ig. Tiln hanh bo sung lugng dinh dudng cho hoa bdng dudng saccaroza d cac ndng dp khdc nhau vdi pH = 4.
Xft ly hoa sau khi bdo qudn Ignh bdng dung djch dudng 2% cho chdt lugng, tudi thp cdm Ip ciia hoa sau bdo qudn Ignh tot nhat.
Ty I? hoa hdng sau 15 ngdy bdo qudn Ignh thdp ban cd (4,8%), d cdng thfte ddi chftng la 45,5%; d cac ndng dp dudng khdc cd ty 1? boa hdng cao ban tft 5,1 - 5,3%. Tudi thp cdm Ip trung binh cao nhdt Id 103,0 h, cao hon so vdi ddi chftng Id 28 h; d cdc nong dp dudng khdc tudi thp cam Ip thdp ban. Ty 1? hoa nd trong thdi gian cdm Ip cao la 91,1%; cdn doi chftng la 8.3%.
Ndng dp dirdng thich hgp cho cam Ip la 2%.
Bang 2. Anh hu'ong ndng dp duong xir ly hoa sau bao quan l^nh d i n chdt luQ^ng va tuoi thp cdm Ip ciia hoa sau bao quan l^nh
Chi tieu theo ddi sau 5 ngay cdm Ip
Ty 1$ hoa hong (%)
Tuoi thp cdm Ip trung binh (gio) Ty l§ hoa no trong thoi gian cdm Ip (%)
Ndng dp duong Saccaroza (%) Ddi ehu'ng
45,5 28,0' 8,3
1,5 5,3 96,0"
90,0
2,0 4,8 103,0^
91,1
2.5 5,1 98,0"
90,0
3.2.2. Anh huong nong do GA3, 8-Hydroxylquinoline xu- ly hoa sau bao quan lanh den chdt luong va tudi tho cam Io ciia hoa
- GA3 thudc nhdm cytokinins, cd tac dung kim ham sir chain gia hda trong boa, giiip cho hoa nd to, tuai lau. Tiln hanh nghien cftu sir anh hudng ciia GA3 trong dung djch cdm Ip din chat lugng ciia hoa. Xft ly hoa sau khi bao quan lanh bdng GA3 d ndng dp 20 ppm cho chdt lugng, tudi thp cdm Ip cua hoa sau bdo qudn lanh tot nhat. Tudi thp cam Ip trung binh cao nhdt la 108,0 h, cao lion so vdi ddi chftng la 28 h; d cac ndng dp GA3 khdc tudi thp cdm Ip thap ban.
Nong dp GA3 thich hgp cho cdm Ip la 20 ppm.
- Xft ly hoa sau khi bdo quan lanh bdng HQ d ndng dp 200 ppm cho chdt lupmg, tudi thp cdm Ip ciia hoa sau bao quan lanh tdt nhat. Tudi thp cdm Ip trung binh cao nhat la 103,0 h cao hon so vdi ddi chftng (31,0 h); a cac ndng dp HQ khdc tuoi thp cdm Ip thdp ban. Ndng dp HQ thich hgp cho cdm lg la 200 ppm.
3.2.3. Anh huong ciia sir ph6i hpp giiia duo-ng saccaroza, GA3 va 8 -Hydroxylquinoline xir ly hoa sau bao quan lanh den chat lu-ong va tu6i tho cam Io ciia hoa
Tft kit qua d tren thdy khi sft dung dudng d ndng dp 2%, 20 ppm GA3, 200ppm HQ d pH = 4 cho chdt lugng hoa cdm Ip la tdt nhat. Chung tdi da phdi hgp cdc chat vdi ndng dp nhu d tren tgo chl phdm cdm Io vd ddnh gid sir dnh hudng cua dung djch cdm Ip den chat lugng ciia hoa sau bdo qudn. Kit qud neu trong bdng 3. Ty 1? hoa hdng d cdng thfte thi nghiem rdt thdp (4,9%)
trong khi dd d cdng thfte ddi chftng la 36,7%. Tudi thp cam Ip trung binh ciia hoa d cdng thfte thi nghiem la 113 h, cao ban rat nhieu so vdi cdng thfte doi chftng (28 h).
Bang 3. Anh hud'ng cua dud'ng saccaroza, GA3 vd 8-Hydroxylquinoline xir ly hoa sau bao quan lanh din chdt lup'ng vd tudi thp cdm Ip ciia hoa
Chi tieu theo ddi sau 5 ngay cdm Io Ty le hoa hong (%)
Tuoi tho cdm Ip trung binh (gio') Ty le hoa no trong thdi gian cam Io (%)
Cdng thirc Ddi chirng
36,7 28,0''
14,0
Thi nghiem 4,9 113.0a
91,0
3.3. Danh gia anh hu'd'ng cua cac dung djch cdm Io d i n c h i t lu'O'ng va tuoi tho cua hoa
Cam boa hdng trong dung dich pha che cd chat lupmg boa tdt ban ca: tudi thp cdm Ip tmng binh la 113,0 h; trong khi dd ddi chftng chi dat 28 h. Chat lugng hoa cung tdt hom so vdi cdng thfte cam Ip bang dung djch Florissan. Nhu vay cam hoa trong dung djch pha che d pH = 4 da nang cao chat lugng cam Ip hudmg thu cua hoa len dang ke.
Bang 4. Anh hud'ng cua cac dung dich cdm Ip din chdt lup'ng cua hoa
Chi tieu theo ddi sau 5 ngdy cdm Ip
Ty le hoa hong (%)
Tuoi thp cdm Ip trung binh (gid) Ty Ip hoa no trong thdi gian cam Ip (%)
Cdng thu'c DC
(nud-c mdy) 35,0 28,0"
14,0
Chl phim Florissan (Ha Lan)
5,7 108,0"
89,1
Chl phim pha chl
4,9 113,0'
91,0
3.4. Anh hu'O'ng cua quy trinh cong nghe bao quan d i n c h i t lu'O'ng cua hoa sau bao quan
Sft dung bai quy trinh: Quy trinh bao quan boa hdng dd Phdp cua Vien Ca dien NN va CNSTH va quy trinh bao quan hoa hdng dd Phap truyin thdng trong nudc: Hoa thu hoach (thudng d dp tudi 3 va 4) lua chpn (loai bd bdng hdng do benh, ca hpc,..) - cam trong nudc - bao quan lanh d 5"C (bao quan udt). Ket qua so sanh neu trong bang 5.
Sang 5. Anh hud'ng ciia quy trinh cdng nghe bao quan din chdt luvng ciia hoa sau bao qudn
Thdi gian bao quan (ngay)
10 15 20
Cdng nghp bao quan Truyin thdng
Ty le hoa hdng sau BQ (%)
23,2 36,7 53,7
Tuoi thp cdm Ip TB sau BQ (gid>)
55,0 43,0 12,0
Ty Ip hoa no (%)
26,1%
14,0 0,0
Vien Co difn NN va CNSTH Ty le hoa
hdng sau BQ (%) 4,1 4,7 4,9
Tudi thp cdm Ip TB sau BQ (gio)
120,0 113,0 108,0
Ty 1$ hoa n&{%)
96,7 91,0 89,2
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Sau 20 ngay bao quan cdng nghe bdo quan hoa hdng dd Phdp cfta Vien Ca dien NN va CNSTH cho ket qua tdt ban nhilu so vdi cdng nghe bdo qudn truyin thdng hien nay d mpt sd ca sd san xuat hoa. Hoa cd tudi thp cdm Ip trung binh Id 108,0 h; ty le hoa nd cao (89,2%) va ty 1?
hoa hdng thap (4,9%); trong khi dd d cdng nghe truyin thdng cho tudi thp cdm Ip trung binh chi dgt 12 h; ty le hoa na la 0,0% (vi khi cho hoa ra cdm Ip chi trong thdi gian ngdn hoa hi heo tdp lai ngay vd khdng thl ndr dugc) va ty le hoa hdng Id 53,7%.
3.5. Quy trinh cong nghe san xult chl pham bao quan, chl pham d m Io va quy trinh cdng nghe u'ng dung cac chl pham nay d l bao quan hoa hdng do Phap
3.5.1. Quy trinh cong nghf san xudt che phim bao quan (BQH), chl phSm c^m Io (CLH) hoa hdng do Phap
Djnh lugng nguyen lieu -> Phdi trdn -> Nghiin nguyen lieu ^ Djnh lupmg thdnh phdm ->
Ddng gdi -^ Chl phdm (BQH, CLH) -> Tieu thu.
3.5.2. Quy trinh cong nghe irng dung che pham bao quan va che pham cam Io hoa hong do Phap
Hoa hdng —> Thu hogch —> Lua chpn, phdn logi -> Xft Iy hoa bdng dung djch bdo qudn d 20°C, RH85% trong 5 gid -> Hg nhiet dp cfta hoa xudng 5°C -> Bd, bao gdi d 5°C -> Xip vdo kho, bdo qudn d 2-5°C, RH85% -> Xft Iy cho hoa nd bdng chl phdm cdm Ip -> Tieu thu.
IV. K^T LUAN
- Dua ra dugc quy trinh cdng nghe sdn xudt che phdm bdo quan (BQH) vd cam Ip (CLH) hoa hdng dd phdp: Djnh lupmg nguyen lieu -> Phoi trdn -> Nghien nguyen lieu -> Cdn djnh lugng thanh phdm -> Ddng gdi -> Chl phdm (BQH, CLH) ->• Tieu thu.
- Sdn xudt ra che phdm bdo qudn vd che phdm cdm lg hudmg thu hoa hdng dd Phdp vdi ten gpi thuang phdm la BQH, CLH. Chl phdm bdo qudn BQH: 6% saccaroza, 300 ppm Al2(S04)3, 140 ppm MnS04, 50 ppm AgNOs, 500 ppm Na2S03, 20 ppm GA3, 300 ppm 8-HydroxylquinoIine, 200 ppm TrixtonX 100; Chl phdm cdm Ip CLH: 2% dudmg sacaroza, 20 ppm GA3, 200 ppm 8- Hydroxyquinoline.
- Xay dimg dugc cdng ngh? ftng dung chl phdm bao qudn vd chl phdm cdm lg hoa hdng dd Phdp: Hoa hdng -> Thu hogch -> Lira chpn, phdn logi -> Xft ly hoa bdng dung dich bdo quan d 20°C, RH85% trong ^ h -> Hg nhiet do cfta hoa xudng 5°C -^ Bd, bao gdi d 5°C -^ Xip vdo kho, bdo qudn d 2-5°C, RH85% -> Xft Iy cho hoa nd -> Tieu thu.
- Cdng nghe bao quan hoa cho thdi gian bdo qudn tft 20 - 25 ngay, tdn that sau bdo qudn
<5%, tudi thg cam lg cfta hoa sau bdo qudn >96 h.
TAI LIEU THAM KHAO
1. Angelitom. Sarmiento - President, FRLD. The Business of Growing roses, 1995.
2. Bdo qudn hoa cdt, chuyen dl tiln sT khoa hpc Nong nghiep chuySn nganh tring trpt. Trucmg DH Nong nghi^plHaNpi, 1998.
3. Dion E.A. Florack, Willem J. Stickema, Dirk Bosch. Toxicity of peptides to bacteria present in the vase water of cut rose. Postharvest Biology and Technology, 8 (1996), 285 - 291.
4. Hodng Minh Tin, Nguyen Quang Thgch, Tran Vdn Phdm - Giao trinh sinh ly thyrc vgt. NXB Nong nghifp, 1994.
5. Le Dodn Dien - Hda sinh th^rc vgt. NXB Nong nghidp, 1993.
6. Nguyen Manh Khai, Nguyin Quang Thach - Etylen va ftng dung trong trdng trot, NXB Nong nghiep, Ha Noi, 1999.
7. Nguyen Quang Thach va cong sir - Nghien cuu anh hudng cua xft ly nhiet do thdp va GA3 din sinh trudng va phat trien cua mot so cay ho hanh toi. NXB Nong nghiep, 1991.
Summary
RESEARCH AND BUILD ON TECHNOLOGY OF PRESERVING POST-HARVEST FRENCH RED ROSE
French red rose preserving preparation named BQH with components of 6% saccaroza, 300ppm Al2(SO.,)3, 140ppm MnS04, 50ppm AgNO}, 500ppm Na2S03, 20ppm GA3, 300ppm 8-Hydroxylquinoline, 200ppm TrixtonX 100 and rose vase-product named CLH in composition of:
2% dudng sacaroza, 20ppm GA3, 200ppm 8-Hydroxyquinoline were produced. A simple and easily applied technology of preserving French red rose whose cost is suitable for production and trade conditions in household scale at locals has been built. Flower preservation technology results in storage time of 20-25 days, loss after storage below 5%, vase-life time of French red rose more than 96 hours.
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