马铃薯块茎产量及相关性状遗传多样性研究基因型

International Journal of Research Studies in Agricultural Sciences Pub Date : 1900-01-01 DOI:10.20431/2454-6224.0708002

Awoke Ali Zeleke

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引用次数: 0

摘要

遗传多样性是育种计划成功的先决条件。该研究于2018/19年在Adet进行，采用简单晶格设计，进行了三次重复。该研究的目的是鉴定具有进一步马铃薯育种活动所需性状的遗传差异马铃薯基因型。采用简单格设计对36个马铃薯基因型的18个数量性状进行了评价。方差分析表明，除每山茎数外，各基因型间各数量性状差异均极显著(p < 0.001)。将所研究的36个马铃薯基因型分为5个不同的簇。聚类V最多，有11个基因型(30.56%)，聚类III有3个基因型(8.33%)。具有发散距离的聚类I和聚类IV可作为亲本进一步育种或杂交。聚类III(4.97)和V(2.37)的簇内距离最大。6个特征值为>1的主成分占所研究马铃薯基因型总变异的78.22%。

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Genetic Diversity Studies for Tuber Yield and Yield Related Traits in Potato (Solanum tuberosum L.) Genotypes

Genetic diversity is a pre request for successful breeding program. The study was conducted at Adet in 2018/19 under field condition in simple lattice design with three replication. The aim of the study was to identify genetically divergent potato genotypes having desired traits for further potato breeding activity. A total of 36 potato genotypes were evaluated for 18 quantitative traits in simple lattice design. The analysis of variance revealed that highly significant (p < 0.001) difference among the tested potato genotypes for all quantitative traits except stem number per hill. The studied 36 potato genotypes were grouped in to five distinct clusters. Cluster V was the largest cluster which consisted of eleven genotypes (30.56%) and cluster III comprise three genotypes (8.33%). Clusters I and IV having divergence distance can be used as a parent for further breeding or crossing. The highest and lowest intra cluster distance was observed in cluster III (4.97) and V (2.37) respectively. A total of six principal component with an Eigen value >1 accounted for 78.22% of the total variation in the studied potato genotypes.

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International Journal of Research Studies in Agricultural Sciences

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