Consequence of weather conditions for affecting crossability in three Vigna species

  • A. Nishant Bhanu*, M.N. Singh and K. Srivastava Department of Genetics and Plant Breeding Institute of Agricultural Sciences Banaras Hindu University
Keywords: Intra- and inter-specific crosses, Vigna, crossability, pod set, ovule fertility

Abstract

Eight intraspecific (four each of mungbean x mungbean and urdbean x urdbean) and 24 interspecific (eight each of mungbean x urdbean, mungbean x ricebean and urdbean x ricebean) crosses were made at five different dates of ten days intervals i.e., September 11-20, 21-30, October 1-10, 11-20 and 21-30 during kharif/late kharif seasons, 2015 to obtain a total of 32 crosses. The per cent crossability at five different dates indicated that it was the  highest during October 1-10 in both intra - (mungbean x mungbean, 72.27%, urdbean x urdbean, 55.55%) and interspecific (mungbean x urdbean, 43.24%, mungbean x ricebean, 16% and urdbean x ricebean, 9.92%) crosses. Similarly, the percent ovule fertility recorded was also the highest during October 1-10 in both intra - (mungbean x mungbean, 90.00%, urdbean x urdbean, 83.33%) and interspecific (mungbean x urdbean, 75.00%, mungbean x ricebean, 71.42% and urdbean x ricebean, 60.00%)  crosses. Optimum temperature (~22˚C) , followed by low humidity (49.0) and comparatively enhanced sunshine (>8.5 hours) might be responsible for accelerating the highest pod sett during October 1-10 and thus may be suggested as appropriate period for obtaining highest pod setting in Vigna species studied.

Author Biography

A. Nishant Bhanu*, M.N. Singh and K. Srivastava, Department of Genetics and Plant Breeding Institute of Agricultural Sciences Banaras Hindu University
Research Scholar
Department of Genetics and Plant Breeding
Institute of Agricultural Sciences
Banaras Hindu University

Published
01-07-2017
Section
Research Note