STUDY ON THE HEAT TOLERANCE IN TOMATO (LYCOPERSICONE SCULENTUM MILL.) AT HYDERABAD, SINDH

Muzamil Hussain Awan; Asif Ali Kaleri; Saba Solangi; Faiza Bibi; Nabeela Rashid; Jawad Ahmed; Noman Asghar; Ahmed Ali; Abdul Sattar; Duaa Akbar

doi:10.71146/kjmr203

Authors

Muzamil Hussain Awan Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Asif Ali Kaleri Department of Agronomy, Sindh Agriculture University, Tandojam, Pakistan Author
Saba Solangi Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Faiza Bibi Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Nabeela Rashid Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Jawad Ahmed Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Noman Asghar Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Ahmed Ali Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Abdul Sattar Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author
Duaa Akbar Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan Author

DOI:

https://doi.org/10.71146/kjmr203

Keywords:

Heat tolerance, Membrane thermostability, Tomato, Sindh

Abstract

Present study was conducted to analyse the heat tolerance and correlation estiamtes in Tomato (lycopersicon esculentum Mill.) at Hyderabad, Sindh. The data was collected for membrane thermostability, elongation of stigma and antheridial cone spiliting, flowers no. and number of flowers shed per plant and production per plant was under the study. The data revealed significant differences among the studied traits. Among the genotypes, (1) Fanto F1 Hybrid exhibited the highest heat tolerance, followed by was (2) Hybrid tomato HT-101B, as evidenced by their high membrane thermostability and low number of flowers shed. These genotypes also demonstrated the highest fruit yield during the hot period. The analysis showed a positive association between fruit yield and membrane thermostability, while a negative association was observed with the number of flowers shed, stigma tube elongation, and antheridial cone splitting. In summary, Roma, with the lowest membrane thermostability, was found to be the most sensitive genotype to heat stress.