Heritability and Correlation for Components of Crop Partitioning in Advanced Generations of Peanut Crosses

Jogloy, C.; Jaisil, Prasit; Akkasaeng, C.; Kesmala, Thawan; Jogloy, Sanun

doi:10.3923/ajps.2011.60.66

Cited by 9 publications

(11 citation statements)

References 18 publications

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“…In this work, irrespective of irrigation environment, the variations in crop growth rate and p were found to be associated with grain yield, as also seen in other crops such as common bean (Scully and Wallace, 1990;Scully et al, 1991), groundnut (Jogloy et al, 2011) and winter wheat (White and Wilson, 2006). However, this association improved under drought stress, as shown with advanced breeding lines of chickpea (Krishnamurthy et al, 1999), emphasizing the need for a selection for both these traits.…”

Section: Discussionsupporting

confidence: 60%

“…But this linkage is a result of extended vegetative duration leading to an excessive vegetative growth or conversely reduced reproductive duration. To explain it further, HI is an integration of two negatively linked individual components, i.e., the reproductive duration and the rate of partitioning (Jogloy et al, 2011;Krishnamurthy et al, 1999). One apparent effect of drought stress is the large reduction in reproductive duration (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, any effort to keep a higher HI needs to aim for a greater p to compensate for the loss in duration and to keep the yield gap reduced. The importance of and selection for p or HI is not new (Adams, 1982;Duncan et al, 1978;Scully and Wallace, 1990;Jogloy et al, 2011). On the basis of a much earlier hypothesis (Searle, 1965), Scully and Wallace (1990) proposed an equation called Relative Sink Strength (RSS) (equivalent to p here), the ratio of seed growth rate upon biomass growth rate, and suggested 1.0 as the highest sink strength for common beans.…”

Section: Discussionmentioning

confidence: 99%

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Partitioning coefficient—A trait that contributes to drought tolerance in chickpea

Krishnamurthy

Kashiwagi

Upadhyaya

et al. 2013

Field Crops Research

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Chickpea is increasingly being grown in tropical areas, and terminal drought is becoming a major constraint to its increased productivity. A trait-based selection approach can achieve further gains in drought tolerance that has been achieved through direct selection for yield. Separation of yield into its components including the rate of partitioning and its duration could permit a better focus on the most relevant trait for yield enhancement under terminal drought. Current work is aimed at understanding the importance of rate of partitioning or the partitioning coefficient (p) as a major contributory trait associated with drought tolerance both in germplasm and breeding lines. A reference collection of chickpea germplasm (n = 280) was evaluated in the field under both terminal drought and optimally irrigated environments; and a set of desi (n = 60) and kabuli (n = 60) advanced breeding lines under terminal drought. Grain yield was associated with its analytical components-crop growth rate (C), reproductive duration (Dr) and p. The path analysis showed that C and p had a large direct positive contribution to yield while Dr had a marginal but negative contribution to yield under drought. The direct contribution of p was the highest but it was marginally reduced by the indirect negative contributions of Dr. However, the total contributions of p to grain yield remained large. The yield of germplasm accessions under drought across the seasons were closely associated (r 2 = 0.70) and also the genotype × year interaction was minimum. The contribution of C, Dr and p to grain yield were similar in the advanced breeding lines. However, kabuli breeding lines had a larger variation for p than the desi lines. The results suggest that a conscious selection for greater p will confer greater tolerance to abiotic stresses, given that terminal drought tends to curtail the length of the reproductive period.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Partitioning coefficient—A trait that contributes to drought tolerance in chickpea

Krishnamurthy

Kashiwagi

Upadhyaya

et al. 2013

Field Crops Research

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“…However, all these discussions indicate that vegetative stage shoot biomass is not the single trait to concentrate in drought tolerance breeding ( Arradeau, 1989 , Bidinger and Witcombe, 1989 , Olaoye, 1999 ). Greater shoot biomass at maturity had been recognized to lead to greater grain yields and greater drought tolerance in chickpea ( Rosales-Serna et al, 2004 , Fenta et al, 2012 , Kashiwagi et al, 2015 ) and greater biomass partitioning to grains had been found to produce the best drought tolerance ( Duncan et al, 1978 , Scully and Wallace, 1990 , Rao, 2001 , Beebe et al, 2008 , Davies et al, 2000 , Ainsworth et al, 2011 , Jogloy et al, 2011 , Krishnamurthy et al, 2013a ).…”

Section: Discussionmentioning

confidence: 99%

“…Analytical components Dr and p together constitute HI ( Jogloy et al, 2011 , Krishnamurthy et al, 1999 ). Therefore, any effort to maintain a higher HI under water deficit needs to aim for a much greater p to compensate for the loss of Dr so as to keep the yield gap reduced.…”

Section: Discussionmentioning

confidence: 99%

Shoot traits and their relevance in terminal drought tolerance of chickpea ( Cicer arietinum L.)

Ramamoorthy

Krishnamurthy

Upadhyaya

et al. 2016

Field Crops Research

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Chickpea is the second most important legume crop largely grown under semi-arid tropics where terminal drought is one of the major constraints for its productivity. A trait-based selection had been considered more beneficial in drought tolerance breeding to overcome the environmental influence on drought yields. Large number of traits had been suggested in literature, with less indication on their importance and priority, for use in such breeding programs resulting in poor utilization of critical traits in drought tolerance breeding. To identify the most critical traits that contribute to grain yield under drought, 12 chickpea genotypes, with well-defined drought response, were field evaluated by sampling at regular intervals during the cropping period. Large range of variation was observed for shoot biomass productivity, specific leaf area (SLA) and leaf area index (LAI) at different days after sowings (DAS), canopy temperature depression (CTD) at mid-reproductive stages, growth duration and both morphological and analytical yield components. Grain yield under drought was closely associated with the rate of partitioning (p), crop growth rate (C), CTD, phenology, LAI at mid-pod fill stage, pod number m−2 at maturity, shoot biomass at reproductive growth stages and SLA at physiological maturity. The shoot trait(s) were prioritized based on their significance and contribution to drought tolerance. The trait(s) that conferred tolerance varied across genotypes. The order of traits/plant functions identified as important and critical for the drought tolerance were p, C, CTD, growth duration and other related traits. Relatively less important traits were LAI, SLA at the mid reproductive stage and pod number per unit area at maturity. The traits Dr, seeds pod−1 and 100-seed weight were found to be least important. Breeding for the best combination of p and C with the right phenology was proposed to be the best selection strategy to enhance terminal drought tolerance in chickpea.

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Groundnut

Alagirisamy

2016

Breeding Oilseed Crops for Sustainable Production

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Heritability and Correlation for Components of Crop Partitioning in Advanced Generations of Peanut Crosses

Cited by 9 publications

References 18 publications

Partitioning coefficient—A trait that contributes to drought tolerance in chickpea

Partitioning coefficient—A trait that contributes to drought tolerance in chickpea

Shoot traits and their relevance in terminal drought tolerance of chickpea ( Cicer arietinum L.)

Groundnut

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