Inheritance of iron deficiency chlorosis resistance in groundnut (Arachis hypogaea L.)

Pattanashetti, S K and Naidu, G K and Prakyath Kumar, K V and Singh, O K and Biradar, B D (2017) Inheritance of iron deficiency chlorosis resistance in groundnut (Arachis hypogaea L.). Journal of Plant Nutrition. pp. 1-9. ISSN 0190-4167

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Iron-deficiency chlorosis (IDC) is an important abiotic constraint affecting the growth and yield of groundnut in calcareous and alkaline soils worldwide. The present study investigated the inheritance of IDC resistance among four straight crosses of groundnut involving four IDC susceptible cultivars as females and a common IDC resistant male parent. The F1's of all the four crosses were resistant to IDC indicating the dominant nature of IDC resistance. The F2's of all the four crosses showed a good fit to the ratio of 15 (IDC resistant): 1 (IDC susceptible) and their behavior among the F3's was as per the expected ratio of 7:4:4:1. The IDC resistance in groundnut is under the control of duplicate dominant genes wherein, the presence of a dominant allele at either of the loci results in IDC resistance, while duplicate recessive results in IDC susceptibility. This information would facilitate development of IDC resistant cultivars of groundnut.

Item Type: Article
Divisions: Research Program : Genetic Gains
Uncontrolled Keywords: Groundnut, Genetics, Inheritance, Iron-deficiency chlorosis (IDC), Peanut, Resistance, Abiotic constraint
Subjects: Mandate crops > Groundnut
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 08 Nov 2017 09:50
Last Modified: 06 Mar 2018 09:18
Official URL:
Acknowledgement: This research was planned and executed by authors Pattanashetti, Naidu and Biradar; data was generated as part of the post-graduation research program of Prakyath Kumar and Omprakash Kumar at Department of Genetics and Plant Breeding, College of Agriculture, Vijayapur under University of Agricultural Sciences, Dharwad; data was interpreted and manuscript was prepared by Pattanashetti and Naidu.
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