Genetic diversity of Safflower (Carthamus tinctorius L.) genotypes at Wollo, Ethiopia using agro-morphological traits

Anwar Kemal, F. Hailu
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引用次数: 2

Abstract

Safflower (Carthamus tinctorius) is an annual oilseed crop of the Compositae or Asteraceae family commercially grown in Ethiopia and other countries. To study the genetic variation and relationships among twelve Safflower genotypes an experiment was carried out under field conditions in randomized complete block design with 3 replications in Wollo University, Dessie campus using the agro-morphological traits that includes plant height, days to flowering, Days to maturity, number of primary branches, number of secondary branches, number of capitula per plant, number of seed per capitulum, thousand seed weight, yield per plant, and yield per plot. Results of the analysis of variance showed significant differences among accessions for traits like days to flowering, days to maturity at p ≤0.01, and for number of primary branches and number of secondary branches at p ≤0.05. Seed yield per plant had significant correlations with number of capitula per plant, number of seeds per capitulum, number of primary and secondary branches. Cluster analysis grouped the 12 genotypes in 2 clusters and one of the accessions remains ungrouped, according to their similarity in various traits studied. The first three principal component analyses were found to explain 85% of the total variation that exists among accessions. The results revealed the presence of a high level of genetic diversity that deserves conservation attention and could be utilized in breeding program to improve Safflower varieties with a high seed yield.
埃塞俄比亚Wollo地区红花(Carthamus tinctorius L.)基因型的农业形态特征遗传多样性
红花(Carthamus tinctorius)是一种菊科或菊科的一年生油料作物,在埃塞俄比亚和其他国家有商业种植。为研究红花12个基因型间的遗传变异及其相互关系,在大田条件下,采用随机完全区组设计,3个重复,在德国德西沃罗大学(Wollo University, Dessie)校区对红花的株高、开花日数、成熟日数、一次枝数、二次枝数、单株头状花序数、单株种子数、千粒重、单株产量和单株产量等农业形态性状进行了试验研究。每亩产量。方差分析结果表明,各种质间开花天数、成熟天数差异显著(p≤0.01),一次枝数和次枝数差异显著(p≤0.05)。单株种子产量与单株头状花序数、头状花序种子数、一次生枝数呈极显著相关。根据12个基因型在各性状上的相似性,聚类分析将12个基因型分为2个聚类,其中1个未分类。前三个主成分分析可以解释85%的总变异。结果表明,该品种具有高度的遗传多样性,值得重视,并可在育种计划中加以利用,以改进高产红花品种。
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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