Genetic diversity studies in selected elite genotypes and released varieties of Rice

Journal of Cereal Research Pub Date : 2023-05-10 DOI:10.25174/2582-2675/2023/126967

K. Bhoite

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Abstract

An experiment was undertaken by utilizing fifty selected elite genotypes and released varieties of rice for ten yields and yield contributing characters to assess genetic divergence at Zonal Agriculture Research Station, Igatpuri, Dist. Nashik during kharif -2020. Path coefficient analysis revealed that test weight exhibited highest positive direct effect on grain yieldplant -1 and subsequently by spikelet fertility, number of panicles plant -1 , plant height, number of spikelet panicle -1 ,panicle length and days to physiological maturity. Whereas, number of fertile spikelet panicle -1 recorded the highest negative direct effect on grain yieldplant -1 . The characters viz; number of panicles plant -1 , number of spikelet panicle -1 , spikelet fertility, test weight had exerted significant positive direct effect on grain yield plant -1 and correlation of these characters with grain yield plant -1 was positively significant. Fifty genotypes were grouped into eight clusters. ClusterII was biggest and consisted of 19 genotypes followed by cluster I with 11 genotypes. The cluster III and V both were consist of 8 genotypes. All remaining clusters viz. cluster IV,

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水稻优良基因型和释放品种遗传多样性研究

在纳西克地区Igatpuri区域农业研究站，利用50个精选的优良基因型和发布品种，对10个产量和产量贡献性状进行了试验，以评估遗传差异。通径系数分析表明，试重对籽粒产量的直接正向影响最大，其次是小穗育性、穗数、株高、小穗数、穗长和生理成熟天数。而可育小穗数-1对籽粒产量的直接负影响最大。字符是;穗数-1、小穗数-1、小穗育性、试重对籽粒产量-1有显著的正直接影响，且这些性状与籽粒产量-1呈显著正相关。50个基因型被分为8个簇。聚类ii最多，有19个基因型，其次是聚类I，有11个基因型。聚类III和聚类V均由8个基因型组成。所有剩余的群集，即群集IV，

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Journal of Cereal Research

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