Phenotypic diversity in cold-tolerant peanut (Arachis hypogaea L.) germplasm

Upadhyaya, H D and Reddy, L J and Dwivedi, S L and Gowda, C L L and Singh, Sube (2009) Phenotypic diversity in cold-tolerant peanut (Arachis hypogaea L.) germplasm. Euphytica, 165 (2). pp. 279-291.

[img] PDF - Published Version
Restricted to ICRISAT users only

Download (206kB) | Request a copy


Tolerance to low temperature is an important prerequisite for optimal performance of peanut (Arachis hypogaea L.) in a number of temperate peanut-growing environments. One hundred fifty-eight peanut accessions belonging to five botanical types, known to be tolerant to low temperature (12 degree C) at germination, were evaluated for phenotypic diversity for 15 morphological traits in the 2001 rainy season and for 15 agronomic and two seed quality traits in the 2001 rainy and 2001/2002 post-rainy seasons. Analysis of data, using the residual maximum-likelihood approach indicated that variance components due to genotypes were significant for all traits in the rainy and for all but two traits in the post-rainy season. Clustering based on scores of nine principle components delineated four clusters. The cold-tolerant genotypes and the standard control cultivars in the four clusters differed in mean, variance, and range both during rainy and post-rainy seasons for a range of agronomic traits, indicating the diversity among the clusters. The cold-tolerant accessions were superior to control cultivars for several agronomic traits compared with their respective controls in both the rainy and post-rainy seasons, so their use in breeding should result in genetically diverse cold-tolerant high-yielding peanut cultivars.

Item Type: Article
Uncontrolled Keywords: Groundnut; Cold tolerance; Genetic diversity; Principal component analysis
Subjects: Mandate crops > Groundnut
Depositing User: Library ICRISAT
Date Deposited: 26 Aug 2011 04:38
Last Modified: 26 Aug 2011 04:39
Official URL:
Acknowledgement: UNSPECIFIED
View Statistics

Actions (login required)

View Item View Item