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Genetic diversity and interrelationship among mulberry genotypes
Rita Banerjee1, Sukhen Roychowdhuri, Haradhan Sau
1Central Sericultural Research and Training Institute, Berhampore 742101, India. ritanet04@yahoo.com
Genetic divergence in 25 mulberry (Morus spp.) genotypes was studied using 14 morphometric traits. Seven unique mulberry accessions were identified as valuable genetic resources for future breeding programs.
Area of Science:
- Plant genetics
- Agronomy
- Horticulture
Background:
- Mulberry (Morus spp.) is a vital crop for sericulture and other industries.
- Understanding genetic diversity is crucial for crop improvement and conservation.
- Agroclimatic variations significantly influence plant genetic resources.
Purpose of the Study:
- To assess the genetic divergence among 25 mulberry genotypes from diverse Indian agroclimatic conditions.
- To identify unique mulberry accessions for valuable genetic resources.
- To determine effective selection criteria for improving mulberry leaf yield.
Main Methods:
- Utilized 14 distinct morphometric traits for quantitative genetic analysis.
- Employed cluster analysis to group genotypes based on genetic similarity.
- Conducted correlation and path analysis to understand trait relationships.
Main Results:
- Observed significant variation across all 14 morphometric traits.
- Grouped the 25 mulberry genotypes into 10 distinct clusters, irrespective of their origin.
- Identified seven unique accessions (Baragura-2, Gorabandha-2, Kalimpong, Herbertpur, Kollegal, Resham majri-7, UP-14) as valuable genetic resources.
Conclusions:
- The study successfully characterized genetic divergence in Indian mulberry germplasm.
- Seven identified mulberry accessions represent unique genetic resources for breeding.
- Direct selection for lamina length, fresh leaf weight, leaf area, and single leaf weight is recommended for enhancing mulberry leaf yield.
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