Physiological analysis of variation in grain growth in wheat

ISBN-13: 9786139974597 / Angielski / Miękka / 2018 / 180 str.

Iyyakutty Ravi; MC Ghildiyal

Opis

Wheat yield, which increased substantially in the past, is commencing to level off. It becomes imperative therefore, analyse the physiological basis of yield, that would aim at breaking the apparent yield barriers. The grain yield has been analysed traditionally in terms of yield components which are negatively correlated with each other. A negative correlation between number of grains per ear and individual grain weight has been frequently observed. An understanding regarding the basis of such a relationship would possibly help in overcoming the negative correlation between yield components and may lead to further enhancement in yield potential in wheat. Studies at this laboratory have indicated that in a variety having higher grain number per ear the additional grains are located in the distal positions in spikelets where availability of assimilates limited their growth and resulted in smaller average grain weight. These observations have an important bearing on the type of desirable ear structure. The present study therefore, evaluates these observations in relation to different species of wheat.

O autorze

Ravi, Iyyakutty
Dr I Ravi and Dr M C Ghildiyal served in ICAR, India for more than 25 years. They worked on source sink relationship in wheat through CO2 enrichment and 14C sucrose translocation in wheat ear studies. Dr Ghildiyal is one of the early researchers who has immensely contributed to the concept of source sink relationship in wheat.