Evaluation of genetic diversity in Lepidium sativum L. germplasm based on multivariate analysis
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RESEARCH ARTICLE
Evaluation of genetic diversity in Lepidium sativum L. germplasm based on multivariate analysis Vinay Kumar . Suchita Lade . Hemant Kumar Yadav
Received: 2 May 2020 / Accepted: 16 September 2020 Ó Springer Nature B.V. 2020
Abstract 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 intercluster distance was recorded 51.63 (between cluster Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10722-020-01024-0) contains supplementary material, which is available to authorized users. V. Kumar S. Lade H. K. Yadav (&) Plant Genetic Resources and Improvement Division, CSIR-National Botanical Research Institute, Lucknow 226001, India e-mail: [email protected] V. Kumar H. K. Yadav Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India S. Lade Department of Biotechnology, Kumaun University, Bhimtal Campus, Nainital, Uttarakhand, India
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. Keywords Cluster analysis Genetic advance Heritability Principal component analysis Correlation analysis
Introduction Lepidium sativum L. is an important medicinal plant belongs to the family Brassicaceae and commonly known as Garden cress or Chandrasur. It is considered as a neglected and underutilized species (Bermejo and Leo´n 1994), native to Egypt and West Asia and widely cultivated across the world. In India, it is cultivated mainly in Rajasthan, Gujarat, Karnataka, Maharashtra
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and Uttar Pradesh (Sharma et al. 2015). The seeds are used in various Ayurvedic preparation as it possesses various medicinal pro
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