1Department of Plant Physiology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, West Bengal, India
2Department of Crop Physiology, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India
3Department of Agronomy, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, West Bengal, India
*Corresponding Author: Ananya Baidya, Department of Plant Physiology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, West Bengal, India, Email: theananya4@gmail.com
Online published on 15 May, 2021.
High temperatures adversely affect the growth and development of plants at vegetative, reproductive and maturity stages of their life cycle. The maximum air temperature of higher than 25°C frequently encountered in lentil at the reproductive stage mainly in West Bengal rice-lentil cropping pattern. Such high temperatures in rabi season impair the crop growth and productivity. Added to this, future climate predictions are indicating 27-28°C during this period.
The field-laboratory experiment was conducted during 2014, with 20 genotypes of lentil. The field experiment was laid in split plot design with 3 different windows of sowing, while the laboratory investigation was carried out in completely randomized design with pollen collected from the field experiment.
The present investigation reveals that high air temperature >25°C resulted in the failure of pollen germination, increase in abnormal pollen tube and aborted pollen. A drastic effect in seed filling and pod development in lentil was observed. Out of 20 lentil genotypes studied, ILL-10893 and L-13-113 emerged as tolerant genotypes while, BM-6 and L-4076 as susceptible with special emphasis on physiological characters.
High-temperature stress, Lentil, Pollen germination, Rabi, Reproductive growth, Yield
