Monpara B A, Dhameliya H R
Agricultural Research Station, Junagadh Agricultural University, Amreli-365601, Gujarat, India.
Pulses Research Station, Junagadh Agricultural University, Junagadh-362001, Gujarat, India.
Pak J Biol Sci. 2013 Sep 15;16(18):955-9. doi: 10.3923/pjbs.2013.955.959.
Genetic analysis of five quantitative traits related to earliness and seed yield in chickpea was carried out using eight segregating populations (F2 generations) and their nine parents. Characters included in the study were days to flowering, flowering period, days to maturity, plant height and seed yield per plant. The results showed that no consistency in magnitude of genetic parameters was observed in any cross populations. However, the F2 of P1xP4 exhibited high magnitude of heritability coupled with high genetic advance and GCV for flowering period, days to maturity and plant height and high heritability with moderate genetic advance and GCV for seed yield per plant. This indicated the involvement of additive gene action and potential for development of early maturing genotypes with enhanced seed yield. Correlation study revealed that days to flowering, flowering period and days to maturity recorded significant positive association among themselves. Though, their associations with seed yield per plant were weak in certain genetic backgrounds, otherwise almost non-significant. Thus, correlation studies revealed that selection for earliness will not directly increase productivity. The possibility of combining components of earliness with yield-promoting alleles was suggested.
利用八个分离群体（F2代）及其九个亲本对鹰嘴豆中与早熟和种子产量相关的五个数量性状进行了遗传分析。研究中包括的性状有开花天数、开花期、成熟天数、株高和单株种子产量。结果表明，在任何杂交群体中均未观察到遗传参数大小的一致性。然而，P1×P4的F2代在开花期、成熟天数和株高方面表现出高遗传力，同时具有高遗传进展和遗传变异系数，在单株种子产量方面具有高遗传力和中等遗传进展及遗传变异系数。这表明存在加性基因作用，并且有潜力培育出早熟且种子产量提高的基因型。相关性研究表明，开花天数、开花期和成熟天数之间存在显著正相关。虽然，在某些遗传背景下它们与单株种子产量的关联较弱，否则几乎不显著。因此，相关性研究表明，选择早熟不会直接提高生产力。有人提出将早熟成分与产量促进等位基因相结合的可能性。
