长江中游夏大豆地方品种品质及产量等性状的典型相关与通径分析

以长江中游地区夏大豆品种资源中随机抽取的９４个品种为材料，运用典型相关分析方法研究品种的蛋白质含量、油分含量、产量性状及其它农艺性状间的相互纲时利用通径分析方法研究产量、产量构成因素及与形态及生育期性状之间的关系。主要结果是：产量与产量构成因素之关系较大，与形态数量性状之关系次之，与生育期性状之关系较小。产量构成三因素中以荚数／株、百粒重对产量，生育前期及分枝数对荚数／株，生育前期及生育后期长短对

CANONICAL CORRELATION ANALYSIS AND PATH COEFFICIENT ANALYSIS OF PROTEIN CONTENT,OIL CONTENT AND YIELD OF SUMMER SOYBEAN LANDRACE POPULATION FROM MID-YANGTZE RIVER VALLEY

Ninety-four varieties from the local soybean germplasm Population in the Mid-Yangtse River Valley were used to explore relations of protein content, oil content, and yield with other characters, i.e. yield components, morpho-quantitative and growing periods characters by means of canonical correlation analysis and path coefficient analysis methods. Results indicated that oil content was significantly correlated with the linear combination of traits,i.e.days to flowering,days from flowering to maturity, 100-weed weight, plant height,number of branches, number of pods per plant, number of seeds per pod. High oil cultivars had diverse features on the above traits in contrast with high Protein ones, therefore, selection of genctypes with both highter protein content and oil content were difficult.Yield had stronger relationship with its components than with morphoquantitative characters, in turn, than with developmental period characters.The relations between yield and its components, (i. e. number of pods per plant, number of seeds per pod, 100-seed weight) between the yield components and traits influencing them were studied.It showed that number of pods per plant and 100-seed weight had strong direct effects on yield, and the same was true for days to flowering and number of branches on number of pods per plant, days to flowering, days from flowering to maturity on 100-seed weight.