Genetic Diversity Analysis of Oryza glaberrima Derived Introgression Lines under Direct Seeded Condition

B. K. Nikhil *

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India and Department of Genetics and Plant Breeding, College of Agriculture, PJTSAU, Hyderabad, Telangana, India.

S. P. Prem Sagar

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India and Department of Genetics and Plant Breeding, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

J. Suresh

Department of Genetics and Plant Breeding, College of Agriculture, PJTSAU, Hyderabad, Telangana, India.

V. Swathy

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Aleena

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Ch. Ravindra

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

S. C. Manoj Kumar

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Manasani Prashanath

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Anantha Siddaiah Madhyavenkatapura

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Kalyani M. Barbadikar

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Ponnuvel Senguttuvel

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

A. V. S. R. Swamy

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Raman Meenakshi Sundaram

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

Channappa Gireesh

Indian Council of Agricultural Research (ICAR), Indian Institute of Rice Research (IIRR), India.

*Author to whom correspondence should be addressed.


Abstract

The increasing water scarcity and labour wages have led to the search for alternative crop establishment in rice, such as direct seeded rice (DSR). DSR can reduce unproductive water flow, reduce labour requirements, and mitigate greenhouse gas emissions. Genetic diversity was assessed for hundred and three rice introgression lines using Mahalanobis’ D2 analysis and Tochers’ clustering method. Cluster I had the largest number of genotypes (73), tailed by Cluster II with 15 genotypes. Cluster III and IV had the maximum intra-cluster distances, with Cluster IV having a significant number for desirable characters. The results disclosed that days to 50% flowering, tailed by plant height contributed much to diversity. The most significant inter-cluster distances were found in Clusters involving III and IV, II and III, I and IV and II and IV. These introgression lines can be utilised in crosses, resulting in fruitful recombination during the selection process.

Keywords: Direct Seeded Rice (DSR), diversity, introgression lines, Oryza glaberrima


How to Cite

Nikhil , B. K., S. P. Prem Sagar, J. Suresh, V. Swathy, Aleena, Ch. Ravindra, S. C. Manoj Kumar, Manasani Prashanath, Anantha Siddaiah Madhyavenkatapura, Kalyani M. Barbadikar, Ponnuvel Senguttuvel, A. V. S. R. Swamy, Raman Meenakshi Sundaram, and Channappa Gireesh. 2023. “Genetic Diversity Analysis of Oryza Glaberrima Derived Introgression Lines under Direct Seeded Condition”. International Journal of Environment and Climate Change 13 (9):3058-64. https://doi.org/10.9734/ijecc/2023/v13i92546.

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