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Evaluation of genetic diversity in Lepidium sativum L. germplasm based on multivariate analysis
Genetic Resources and Crop Evolution ( IF 1.6 ) Pub Date : 2020-09-24 , DOI: 10.1007/s10722-020-01024-0
Vinay Kumar , Suchita Lade , Hemant Kumar Yadav

Lepidium sativum L. is a fast-growing and underutilized medicinal plant. The Indian system of medicinal and health recognized this plant as a source of several medicinal and nutraceutical molecules. The 94 accessions collected from different eco-geographical region of India were evaluated for two consecutive years to assess the level of genetic variability. The ANOVA revealed considerable variability for all the quantitative traits. The hierarchical clustering grouped all the accessions into 6 clusters. The clustering showed that majority of accessions i.e. 68 (72%) were genetically close as they grouped into three clusters (I, IV, V). The intra-cluster values ranged from 138.89 (cluster I) to 26.92 (cluster IV). The minimum inter-cluster distance was recorded 51.63 (between cluster III and IV), while the maximum inter-cluster distance was 361.02 (between cluster II and VI). The correlation among the traits were found to be of similar magnitude and direction for almost all the traits. The highest and lowest broad sense heritability was recorded for plant height (88.88%) and number of lateral branches (26.98%) respectively in first year, while in second year, the number of silique/plant (97.30%) and date of emergence (4.36%) respectively. The high estimates of genetic advance were noticed for all the traits except plant height, days of maturity and number of silique/plant. Through the present investigation diverse accessions have been identified that could utilized for further genetic improvement of Lepidium sativum.



中文翻译:

基于多变量分析的小番茄种质资源遗传多样性评估

番茄L.是一种生长迅速且利用不足的药用植物。印度的医学和卫生体系认为这种植物是几种药用和营养分子的来源。连续两年对从印度不同生态地理区域收集的94种材料进行了评估,以评估遗传变异的水平。方差分析显示所有定量性状的相当大的可变性。层次聚类将所有种质分为6个聚类。聚类表明,大多数种(即68个(72%))在遗传上接近,因为它们分为三个类(I,IV,V)。群集内的值范围从138.89(群集I)到26.92(群集IV)。记录的最小群集间距离为51.63(在群集III和IV之间),而最大群集间距离为361。02(在群集II和VI之间)。研究发现,性状之间的相关性在几乎所有性状上都具有相似的大小和方向。第一年分别记录了最高和最低的广义遗传力,分别为株高(88.88%)和侧枝数(26.98%),第二年,角果/株数(97.30%)和出苗日期( 4.36%)。除植物高度,成熟天数和长角果/植物的数量外,所有其他性状的遗传进展估计很高。通过目前的调查,已经鉴定出可以用于进一步遗传改良的种质。第一年分别记录了最高和最低的广义遗传力,分别为株高(88.88%)和侧枝数(26.98%),第二年,角果/株数(97.30%)和出苗日期( 4.36%)。除植物高度,成熟天数和长角果/植物的数量外,所有其他性状的遗传进展估计很高。通过目前的调查,已经鉴定出可以用于进一步遗传改良的种质。第一年分别记录了最高和最低的广义遗传力,分别为株高(88.88%)和侧枝数(26.98%),第二年,角果/株数(97.30%)和出苗日期( 4.36%)。除植物高度,成熟天数和长角果/植物的数量外,所有其他性状的遗传进展估计很高。通过目前的调查,已经鉴定出可以用于进一步遗传改良的种质。独行菜豌豆

更新日期:2020-09-25
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