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Title: | Multivariate analysis of geographically diverse rice germplasm for genetic improvement of yield, dormancy and shattering-related traits |
Other Titles: | Not Available |
Authors: | K. Deepika , Krishna Lavuri , Santosha Rathod , Chandra Mohan Yeshala , Aravind Kumar Jukanti , S. Narender Reddy , Subba Rao LV and Jyothi Badri |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Institute of Rice Research |
Published/ Complete Date: | 2021-04-07 |
Project Code: | Not Available |
Keywords: | augmented randomized complete block design, dormancy, multivariate analysis, rice, shattering yield |
Publisher: | Not Available |
Citation: | 15. Deepika, K., Lavuri, K., Rathod, S., Yeshala, C.M., Jukanti, A.K., Reddy, S.N., LV, S.R. and Badri, J., 2021. Multivariate analysis of geographically diverse rice germplasm for genetic improvement of yield, dormancy and shattering-related traits. Plant Genetic Resources: Characterization and Utilization, 19(2), pp.144-152. |
Series/Report no.: | Not Available; |
Abstract/Description: | A diverse set of 107 rice genotypes was evaluated for yield, shattering and dormancy traits. Analysis of variance revealed sizable variation while skewness and kurtosis values indicated near-normal distribution for most of the traits, thus quantitative nature controlled by many genes. A highly significant deviation from a normal distribution for dormancy and shattering % indicated their qualitative nature of inheritance. Four promising genotypes ‘IRGC1723’ (early with 65 days to flowering), ‘IRGC 11108’ and ‘RNR 15459’ (high grain number – 358 and low average shattering – <5%), ‘RNR 11718’ (high single plant yield – 56.73 g, low average shattering – <5% and dormancy period – 21 days) are identified. A significant positive correlation between shattering and dormancy confirms inter-relationship among domestication-related characteristics. The principal component analysis revealed the contribution of four PCs to maximum variability and hierarchical clustering grouped the genotypes into 18 divergent clusters. Five cultivars (Karimnagar Samba, Sheetal, PR 121, Pranahitha and Jagitial Samba) with a combination of low shattering ability (3.35–5.7%) and considerable dormancy period (13–20 days) falling in the same cluster can be used as donors for the improvement of rice genotypes with low shattering ability and incorporating a considerable period of dormancy so as to avoid pre-harvest sprouting due to delayed harvesting. Further, they can be crossed with ‘Pratyumna’ having less than 1 week dormancy period, a genotype of the cluster XVII with which they have a maximum genetic divergence of 51.4 and may serve as parents in the development of mapping populations for the identification of QTLs/genes for shattering and dormancy traits. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Plant Genetic Resources - Characterization and Utilization |
Volume No.: | 19 (2) |
Page Number: | 144 - 152 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | https://doi.org/10.1017/S1479262121000186 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/71260 |
Appears in Collections: | CS-IIRR-Publication |
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