
TY  - JOUR
A1  - Chowdhury, SI 
A1  - Wardlaw, IF 
T1  - The effect of temperature on kernel development in cereals
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1978
VL  - 29
IS  - 2
SP  - 205
EP  - 223
KW  - 
UR  - https://doi.org/10.1071/AR9780205 
N2  - A study has been made of the effect of temperature on kernel development and mature kernel weight of three contrasting cereals: wheat, rice and sorghum. Wheat and sorghum showed clear and well-separated optimum temperatures for individual kernel dry weights of 15/10&#176; and 27/22&#176;C respectively, while rice showed a relatively small change in weight over temperatures ranging from 21/16&#176; to 30/25&#176;. Rice kernel development was less affected by temperature extremes than sorghum, but was more sensitive to low temperature than wheat. At the lower temperatures (21/16&#176;) the rate of development of individual kernels was greater in wheat than in the other species, while in sorghum, which had a more marked temperature response, the rate of kernel development was greater than in the other cereals at the higher temperatures (30/25&#176;). A preliminary analysis of barley suggests that kernel development in this cereal responds to temperature in a similar way to wheat. Measurements of net photosynthesis of the flag leaf blade and ear of each cereal, at intervals after anthesis, suggested that at the completion of kernel development a source of carbohydrate was still available for continued development at all temperatures. A preliminary examination was carried out on the role of respiration and of translocation in limiting kernel development at high temperatures. 
ER  -

