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小麦在一定密度范围内,通过提高千粒重和每穗粒数来提高穗粒重,这是高产育种及良种高产栽培研究的重要任务。为了探讨从育种角度上如何提高小麦的穗粒重,我们对1976、77两年的考种资料进行了千粒重、穗粒数和穗粒重三者相关关系的测定。一、取材及资料的处理(一)1976年的资料取材于杂种第2代。第2代的分离材料,选择1,420个单穗分别脱粒、数粒、称重,由单穗的粒数和单穗粒重求出千粒重。(二)1977年资料取材于杂种第2代、第3代、第4代和复合杂交的第1代,选择
In a certain density range, wheat increased grain weight by increasing 1000-grain weight and grain per spike, which is an important task in high-yield breeding and high-yielding cultivation of seed. In order to explore how to improve the grain-ear weight of wheat from the perspective of breeding, we measured the relationship between the 1000-grain weight, the number of grains per ear and the weight of grains per ear in the test materials of 1976 and 2007. First, drawn and data processing (a) 1976 data drawn from the hybrid second generation. The second generation of material, select 1,420 single spike were threshed, a few grains, weighing, grain weight from a single spike and grain weight per 1000 grain weight obtained. (2) The data of 1977 are based on the first generation of hybrids of the second, third, fourth and hybrids