Combining ability estimates and heterosis analysis on major yield attributing traits and lint quality in American cotton (Gossypium hirsutum L.)
Combining ability estimates and heterosis analysis on major yield attributing traits and lint quality in American cotton (Gossypium hirsutum L.)
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美国棉花（Gossypium hirsutum L.）主要产量归因性状和皮棉品质的联合能力估计和杂种优势分析
DOI：
10.37992/2021.1204.153
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发表时间：
2021
影响因子：
--
通讯作者：
N. Premalatha
中科院分区：
文献类型：
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作者：
S. Mudhalvan;S. Rajeswari;L. Mahalingam;P. Jeyakumar;M. Muthuswami;N. Premalatha
2019年，6个棉花品系和5个测试器在Line x测试器交配设计中杂交。因此，对11个亲本和标准对照的配合力和标准杂种优势进行了评价。记录了单株合生枝数、单株铃数、铃重、出铃率、绒长和单株籽棉产量。在亲本中，GJHV 534、TVH 002、NDLH32、TCH 1894和RAHC 1040对单株铃数、合生枝数、跨长、籽棉产量和生姜结实率有较高的正向一般配合力效应。这些结果表明，这五个亲本都是很好的综合组合，涵盖了所研究的产量构成性状，可能是杂交和选择方案的首选。TVH002×RAHC 1040、GJHV 534×RAHC 1040和TCH 1894×NDLH32等组合对几乎所有性状的特殊配合力效应都有较高的估计值，且具有较高的杂种优势效应。因此，这些杂交种可能是利用棉花杂种优势的潜在杂交种。
Six cotton lines and five testers were crossed in a line x tester mating design in 2019. Thereby hybrids along with 11 parents and a standard check were evaluated for combining ability and standard heterosis. Observations on sympodial branches per plant, the number of bolls per plant, boll weight, Ginning Out Turn, staple length and seed cotton yield per plant were recorded. Among the parents, GJHV 534, TVH 002, NDLH 32, TCH 1894 and RAHC 1040 displayed higher positive gca effects for the number of bolls/plant, sympodial branches/plant, span length, seed cotton yield and ginning outturn percentage. Such results suggested that all these five parents were good general combiners covering the yield contributing traits studied and may be preferred for hybridization and selection programmes. The crosses viz., TVH 002 x RAHC 1040, GJHV 534 x RAHC 1040 and TCH 1894 x NDLH 32 with higher estimates of sca effects for almost all the traits and also were observed with higher heterotic effects. Thus these hybrids could be potential hybrids for the exploitation of heterosis in cotton.