Morpho-physiological Variations and Genetic Components Analysis in Brassica juncea (Linn.) Czern & Coss | Chapter 10 | Research Developments in Science and Technology Vol. 1

 Assessment of morpho-physiological genetic diversity and study of genetic components may play an important role in the preservation and enhancement of a vulnerable crop species.

The current study included 196 genotypes of Indian mustard, as well as controls. Various morpho-physiological parameters were used to evaluate the genotypes. All of the genotypes were grown in a two-replication randomised block configuration.

Field experiments were conducted in Rabi 2016-17 and 2017-18 at the experimental field of the Department of Genetics & Plant Breeding, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India.

Methodology: The inquiry was aimed to record many morphological and physiological data that are important in distinguishing the thorny genotypes.

Seed yield per plant had the highest genotypic and phenotypic coefficients of disagreement, followed by harvest index and number of silique per plant, according to the current study. Seed yield per plot had the highest heritability and genetic advance, followed by harvest index, biological yield per plot, days to 50% flowering, main raceme length, number of silique per plant, seed yield per plant, number of seeds per silique, 1000-seed weight, and number of silique per the main raceme.

Conclusions: Principal component analysis identified 15 principal components, while cluster analysis identified 16 clusters. Cluster 9 and Cluster 16 had the greatest inter-cluster distance, indicating that the hybridization programme involving parents from these clusters is likely to have a greater incidence of better-wanted combination(s) for the development of beneficial genetic materials.

Author(S) Details

Chitralekha Shyam
Department of Genetics & Plant Breeding, College of Agriculture, RVS Agricultural University, Gwalior, 474002 M. P, India.

M. K. Tripathi
Department of Genetics & Plant Breeding, College of Agriculture, RVS Agricultural University, Gwalior, 474002 M. P, India.

Sushma Tiwari
Department of Genetics & Plant Breeding, College of Agriculture, RVS Agricultural University, Gwalior, 474002 M. P, India.

Niraj Tripathi
Directorate of Research Services, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur 482004, India.

R. S. Sikarwar
Department of Genetics & Plant Breeding, College of Agriculture, RVS Agricultural University, Gwalior, 474002 M. P, India.

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