Effect of elevated temperature on growth and physiological characteristics in chickpea cultivars
2009
Khetarpal, S. | Pal, M. | Lata, S.
A study was conducted to investigate the effect of rising temperature on growth and physiological characteristics in chickpea genotypes. Plants of Pusa 1108 and Pusa 1053 (both kabuli type) were raised in earthenware pots under natural environment. One set of plants was raised in a poly cover and exposed to high temperature (3.1°C above ambient) through out the growth period. Similarly, two sets of plants were exposed to high temperature at flowering and podding for short duration of ten days only. Plants of both the cultivars grown at high temperature through out the growth period exhibited enhanced vegetative growth in terms of increased shoot length, production of more number of branches, leaf area and dry weight accumulation per plant. Rate of photosynthesis increased, stomatal conductance decreased but membrane stability and proline concentration was higher in plants of both cultivars under high temperature but no significant changes were observed in relative water content and total sugars. Yield attributes like pod and seed weight and plant biomass of these plants was less than the plants exposed to high temperature for short duration only at flowering and podding stages. These findings suggest that 3.1°C increase in growth temperature may enhance vegetative growth and photosynthesis in chickpea but may not influence the plant yield. On the other hand, short terms exposure of higher temperature at flowering or podding may have positive influence on yield of chickpea cultivars in timely sown crop under Delhi conditions.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Indian Council of Agricultural Research