REVIEW OF LITEI4ATLi 141
2.16 Path analysis
Positive correlation between yield per plant and 100-seed weight was reported by khan (1949). I3hardwaj and Singh (1972). Joshi (1972). Singh ci at (1973).
I al
d ul. (I 976). Singli el of. ( I 977) and I slam el al.( 1994) also observed similar relationship between the traits which were in supports of the previous findings.
Yield per plant having positive relatRnIsllip with harvest index was reported by
:11 of g;f (1976) hiil
a
uieie;sl iveuehiciotisliip huiweeri the eliar;telers was reported by Bail and Jam (1977).
Pods per plant showing positive relationship with primary branches per plant was reported by islam and Begum (1985). and with flower initiation stage by lT3aluch and Soomroo (1968). But the character pods per plant having negative relationship with IOU seed weight was reported by Oroan c/ at (1977). Islam ci at (1 984) and Salimath and I3ah I (I 985).
Oroan ci al. (1977) observed positive relationship between days to maturity and
plant height with 100-seed weight.
Muhammad ci at. (2004) stated high direct effects on grain yield of chickpea
were exhibited by biological yield and harvest index, although the latter had a negative association with grain yield. Most of the yield components had high indirect coruributioji on grain yield via hiologicj yield: thus. biological yield and harvest index should he given niore consideration xvIii Ic deciding on select ion criteria for rainfed condit ions
Rao and Kumar (2003) evaluated twenty diverse chickpea cultivars (hr the association of the following parameters during the raW season of 1996-97 in Madhya Pradesh. India: days to 50010 flowering. days to maturity, the length of the period from (lowering to maturity, pod bearing duration, plant height. IOU- seed weight and seed yield. Patti coefficient analysis indicated the relationship of the following characters with seed yield: days to mai urity. plant height and 100-seed weight. Results also indicate the substantial contribution of the period from flowering to maturity and I 00-seed weight to the seed yield.
Pankaj c/ al. (2003) reported the maximum positive direct effect was of pods per plant. whereas inaxiuiitiuu iiegat lye direct cliktI was titic to (lays to physiological maturity.
Narayana and Reddy (2002) observed high direct ctThets of number of pods per plant. 100-seed weight. number of seeds per pod and harvest mdcx on seed yield.
Correlation and path ene FIicit.'nts have been studied by Yadav
d
al. ( 1999) in 40 chickpea genotypes. which were planted at two locations in two seisons in randomized block design. Path coeluicients at genotypic as well as at phenotypic levels showed that harvest index, biological yield and 100-seed weight made maximum direct contribution and also exened appreciable indirect influence towards grain yield.Khedar and Maloo (1999) stated pods per plant had the highest direct effect on seed yield of chickpea followed by seeds per pod. IOU-seed weight and primary branches per plant.
Cinsoy and Yarnan (1998) evaluated some 125 chickpea ((7cc;' arietinum) populations and found direct effects of' leallet length. pod length and seeds per pod on seed weight were also signi Ficaiit. I )urat ion ol tiowering and canopy height were negatively correlated with seed weight.
Singh c/ aL (1997) grew Iburteen genotypes or ('leer uric/mum in a replicated design with three replications at N4cerut during rabi I 99 1 -92. Path coefficient analysis for 13 yield-related characters was conducted. Grain yield exhibited significant and positive associations with number of pods per plant. harvest index, number of' primary branches, number of secondary branches. number of tertiary branches and biological yield per plant. The patti coefficient study revealed that the magnitude of residual effects was yen' low. Thus a major
included in the present study. It is concluded that harvest index, biological yield per plant. 100-seed weiglil and number of pods per plant should be taken into consideration when exercising selection.
Ozdemir et at (1996) studied the relationship between seed yield and 9 yield components in 38 chickpea (Cicer arietinwn) genotypes grown. Correlation and path analyses showed that seed yield/plant, secondary branches per plant and number of seeds per plant were the most important yield components with significant direct and indirect ciTheis. Number of pods per plant had a significant and positive correlation with seed yield: although it had a negative direct effect; its indirect effect was positive via seed number and seed yield per plant.
Sandhu and Mangat (1995) stated inlorn'iat ion on yield correlations is derived from data on 8 characters and yield components in 32 divcrse genotypes of chickpea (Cic'cr ar/ct /nu,sz ) gro\% n during raN I 992-93 at Jiathinda. Yield/plant showed significant positive associations with primary branches, pods/plant and harvest index, and negative associations with plant height (45 days after sowing) and days to [lowering. Path analysis suggested that harvest index and 100-seed weight had high direct elThcts on yield.
Tripathi et at (1995) conducted path coefficient analysis for 8 characters and yield components in 40 diverse varieties of Cicer aric'/inu,n. Yield per plant was highly associated with pods per plant, primary branches and IOU-seed weight.
Singh ci at (1995) stated inior-niation on yield correlations derived from data on 8 yield components in 15 ('leer ar/c/mu/n F2 populations and (1w F3 generations from 20 randomly selected plants of each population. Seed yield per plant had a significant positive correlation with pods per plant, biomass per plant and han'est index in both generations. Correlations among the yield components were further partitioned into direct and indirect effccts among yield and its component characters in the El populations. fliomass per plant had the greatest direct elThct on seed yield, Ibliowed by 100-seed mass and seeds per pod.
Forty Cicer arietinum genotypes were evaluated by Arora ci al. (1994) and reported seed yield per plant was positively associated with biological yield per plant, pods per plant. plant height. 100-seed weight and canopy space.
Biological yield per plant, harvest index, pods per plant and 100-seed weight had the highest positive direct eiict on seed yield per plant.
Dasgupta ci at (1992) studied 28 genotypes ci chickpea and stated pods per plant. seeds per plant. 100-seed weight and seeds per pod registered highly positive direct effects on yield.