Evidence of a unique inter-allelic epistatic interaction for seed coat color in pigeonpea [Cajanus cajan (L.) Millspaugh]

Saxena, K B and Saxena, R K and Kumar, R V and Varshney, R K (2012) Evidence of a unique inter-allelic epistatic interaction for seed coat color in pigeonpea [Cajanus cajan (L.) Millspaugh]. Euphytica, 186 (3). pp. 813-816. ISSN 1573-5060

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For enhancing productivity and profitabil- ity of pigeonpea (Cajanus cajan (L.) Millsp.) a hybrid breeding technology based on a cytoplasmic nuclear male-sterility (CMS) system was developed at Inter- national Crops Research Institute for the Semi-Arid Tropics (ICRISAT). Among the elite hybrids ‘ICPH 2671’ was most out-standing with 30–35% yield advantage over local varieties. Despite its commercial release in 2010, this hybrid could not attract many growers due to its less preferred seed color. Both the parents (ICPA 2043 and ICPR 2671) of this hybrid and their crossed seeds had Greyed-orange [code no*: 167B/C (* The standard identification numbers of Royal Horticultural Society)] color. However, the commercial seeds produced on the hybrid plants surprisingly have Greyed-purple (code no: 183C) color that fetches relatively less profits. To understand the genetics of this phenomenon a cross combination was studied for seed color in F1, F2, and B1C1F1 generations. The data suggested that three independent dominant genes controlled the expression of seed coat color. The observations further suggested the presence of two dominant genes (Brsd1 and Brsd2) in the male- sterile line ‘ICPA 2043’, ‘ICPR 2671’ and another

Item Type: Article
Uncontrolled Keywords: Gene interaction – Hybrids – Inheritance – Pigeonpea – Seed-coat color
Subjects: Mandate crops > Pigeonpea
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 10 Jan 2012 05:11
Last Modified: 01 Aug 2012 04:32
URI: http://oar.icrisat.org/id/eprint/5326
Official URL: http://dx.doi.org/10.1007/s10681-011-0610-z
Acknowledgement: UNSPECIFIED
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