Assessment of Combining Ability Analysis for Pod Yield and its Attributing Traits in Groundnut (Arachis hypogaea L.)

Agricultural Science Digest - A Research Journal Pub Date : 2024-03-29 DOI:10.18805/ag.d-5929

G. V. Rao, M. Pandiyan, N. Manivannan, C.N. Chandrasekhar, C. Harisudan

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Abstract

Background: Groundnut is a globally significant oil crop. It possesses diversity in the nutritional and medicinal values. Groundnut kernels contain 48%-50% oil, 26%-28% protein and vitamins B and E. Continuous efforts to enhance groundnut productivity is the main driving force for the current study. Methods: Line × Tester analysis was carried out to estimate the gene action of yield and its attributing traits for their improvement. Seven lines viz., VRI 7, VRI 8, VRI 9, VRI 10, K 6, GG 7 and CO 7 and eight testers viz., IGCV 15402, IGCV 15412, IGCV 15432, IGCV 15427, IGCV 15426, IGCV 15408, IGCV 15410 and IGCV 15388 were crossed to obtain 56 crosses. GCA and SCA variance revealed the importance of both additive and non-additive gene action of all the traits. Result: The study observed significantly higher specific combining ability (SCA) variances compared to general combining ability (GCA) variances, indicating a predominant role of non-additive gene action in trait control. Line VRI 7 was observed best GCA, particularly for pod yield and other traits making it a promising variety for pod yield enhancement programs in the future. The SCA for hybrid VRI 8 × ICGV15426 and VRI 7 × ICGV15402 revealed superior performance in terms of pod yield per plant. Notably, the VRI 7 × ICGV15402 cross exhibited outstanding performance across all traits, highlighting the prominence of a parent with strong GCA. The study recommends early-generation selection as a strategic approach for improving groundnut breeding efforts.

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花生（Arachis hypogaea L.）荚果产量及其附属性状的组合能力分析评估

背景：落花生是全球重要的油料作物。它具有多种营养和药用价值。花生仁含油 48%-50%、蛋白质 26%-28%、维生素 B 和 E。研究方法对品系×测试者进行了分析，以估计产量及其相关性状的基因作用，从而对其进行改良。对 7 个品系（即 VRI 7、VRI 8、VRI 9、VRI 10、K 6、GG 7 和 CO 7）和 8 个测试者（即 IGCV 15402、IGCV 15412、IGCV 15432、IGCV 15427、IGCV 15426、IGCV 15408、IGCV 15410 和 IGCV 15388）进行杂交，得到 56 个杂交种。GCA 和 SCA 方差显示了所有性状的加性和非加性基因作用的重要性。结果研究观察到特异性结合能力（SCA）方差明显高于一般结合能力（GCA）方差，表明非加性基因作用在性状控制中起着主导作用。据观察，品系 VRI 7 的 GCA 最好，尤其是在豆荚产量和其他性状方面，使其成为未来豆荚产量提高计划中的一个有前途的品种。杂交种 VRI 8 × ICGV15426 和 VRI 7 × ICGV15402 的 SCA 表明其单株豆荚产量表现优异。值得注意的是，VRI 7 × ICGV15402杂交种在所有性状上都表现突出，凸显了父本具有较强GCA的优势。该研究建议将早代选择作为改进花生育种工作的战略方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Agricultural Science Digest - A Research Journal

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