摘要
对１９７５～１９９２年有关穗粒数试验资料，进行逐步回归分析，明确东北春小麦穗粒构成因素对穗粒数的作用关系，并提出东北北部春小麦主产区春小麦穗粒数的调控途径：调整生育期进程，在多小穗基础上，提高小穗结实率是增花增粒和充分发挥北部主产区春小麦产量潜力的关键．
Our studies in the past indicated that grain number per spike played an important role in yield formation in spring wheat of Spring Wheat Region in Northeast China (SWRNEC).In order to make sure further which component in spike structure determines the grain numberper spike, stepwise variable selection analysis was carried out on computer.Data used in the study were collected from the experiments under different conditions and different genotypeswere used of our research lab during the period of 1975-1992.Regression analysis of stepwisevariable selection indicated that the total spikelets(including both fertile and sterile spikelets)per spike and grain-setting rate were significantly correlated with grain number per spike. Correlation between dry matter accumulation level in plant before jointing and grain numberper spike has been found.The way of regulating grain number per spike in spring wheat ofSWREC has been suggested.
出处
《东北农业大学学报》
CAS
CSCD
1994年第1期1-9,共9页
Journal of Northeast Agricultural University
关键词
春小麦
穗粒数
调控途径
way of regulating,spring wheat,grain number,stepwise variable selection,regression analysis ,spikelet,grain -setting rate
