Kernel ageing: an analysis in four Malaysian rice varieties

Abstract

In the present investigations, efforts were made to find out the ageing influence on four popular Malaysian rice varieties i.e. Mahsuri, Mahsuri Mutant, NS 9192 and Putri (Q-50). In Mahsuri, highest proportionate change, actual elongation and elongation was 0.17, 3.2 and 1.73 through natural ageing and in artificial ageing it was 0.23, 4.6 and 1.84, respectively. In Mahsuri Mutant, highest proportionate change, actual elongation and elongation was 0.43, 7.5 and 1.77, respectively through natural ageing and in artificial ageing it was 0.65, 8.5 and 2.15. Highest proportionate change, actual elongation and elongation was 0.27, 3.6 and 1.59, respectively through natural ageing in NS 9192 and in artificial ageing it was 0.60, 6.75, 2.29. Finally, in Putri highest proportionate change, actual elongation and elongation was 0.90, 7.0 and 2.08, respectively through natural ageing and in artificial ageing it was 0.90, 8.1 and 1.85. After considering different factors such as economical and practical limitations and analyzing the obtained results, it can be concluded that to get a good elongation ratio for Mahsuri, Mahsuri Mutant, NS 9192 and Putri, ageing at 110ºC for 3 h is best and convenient.