Identification and characterization of sources for photo‐ and thermo‐insensitivity in Vigna species. Issue 6 (13th October 2014)

• Record Type: Journal Article
• Authors: Pratap, Aditya; Basu, Partha Sarathi; Gupta, Sanjeev; Malviya, Nupur; Rajan, Neha; Tomar, Rakhi; Madhavan, Latha; Nadarajan, Nagasamy; Singh, Narendra Pratap; Prasad, M.
• Is Part Of: Plant breeding. Volume 133:Issue 6(2014)
• Page Start: 756
• Page End: 764
• Publication Date: 2014-10-13
• Subjects: Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12215
• Languages: English
• ISSNs: 0179-9541

Abstract

<abstract abstract-type="main" id="pbr12215-abs-0001"> <title>Abstract</title> <p>Cultivation of the same varieties of mungbean and blackgram across different seasons and locations is constrained by their photo‐ and thermo‐sensitive behaviour. Developing insensitive genotypes, which can fit well across all seasons, requires robust donors which would provide genes imparting this trait. This study was undertaken to identify such donors in the <italic>Vigna</italic> species. Forty‐eight accessions belonging to 13 <italic>Vigna</italic> species and eight released cultivars were evaluated under natural field conditions. Among these, two accessions, viz. <italic>V. umbellata</italic> (IC251442) and <italic>V. glabrescens</italic> (IC251372) were found photo‐ and thermo‐insensitive as these were able to flower and set pods at temperatures as high as 43.9°C and as low as 2.7°C. Pollen viability studies indicated viable pollen (&gt;75% at 2.7°C and &gt;85% at 41.9°C) and normal pollen tube growth at both the extremes of temperature. The identified <italic>V. glabrescens</italic> accession has long, constricted pods and dark green, mottled seeds while <italic>V. umbellata</italic> has smooth, curved pods and shining, oval, large seeds. Both these accessions can be utilized in developing photo–thermo insensitive genotypes in cultivated <italic>Vigna</italic> species.</p> </abstract>