Abstract:

In order to discover the effect of grain position effect between the awn length and grain weight, the two wheat cultivars, ‘Meisheng 0308’ and ‘Meisheng 5’ were selected, and their grain length and grain weight of different grain position were studied. The results indicated that the relationship between awn length and grain weight was positive related significantly. The correlation coefficient was 0.373 (P=0.0046) and 0.267 (P=0.0256) respectively. However, in the same flower from different spikelet, the correlation degree between awn length and grain weight was different. There was not significant correlation in the first floret position, while the positive correlation in the second floret position was significant with correlation coefficient 0.3814 (P=0.0454) and 0.4802 (P=0.0170) respectively, and there was significant correlation in the third floret position with correlation coefficient 0.8455(P=0.0003) and 0.8516 (P=0.0001) respectively.