Genotypic response to heat stress tolerance in brinjal (Solanum melongena L.) Dhatt AS*, Kaur Manpreet Department of Vegetable Science, Punjab Agricultural University, Ludhiana-141004, Punjab *Corresponding author, E-mail: ajmerdhatt@gmail.com
Online published on 26 December, 2017. Abstract The experiment was conducted out at Vegetable Experimental Area, Department of Vegetable Science, Punjab Agricultural University, Ludhiana. Sixty three brinjal genotypes were evaluated for heat stress tolerance during summer and rainy season. Ten characters were analyzed and had shown significant differences for all traits during both the seasons. Among all genotypes, high yield was observed in BL205, BL215, BR123, BL201 and BL214 during summer and G414, BL222, BR104, BR102 and S331 during rainy season. The lowest yield was observed in BL223, BL219 and BR119 during summer season. Genotypes showed 50% flowering in less than 25 days after transplanting were SR318, SR305 and GL403. Reduction in pollen fertility causes flower drop, fruit drop and lower the fruit yield at high temperature. Among all, BL205, BL215 and BR123 showed minimum seasonal differences for yield due to high pollen viability and fruit setting. Thus, these genotypes can further be exploited during summer season per se or by involving in breeding programme. Top Keywords Eggplant, genotypes, heat stress, tolerance. Top |