高粱杂交种茎叶产量与能源品质性状相关性分析

为分析能源高粱杂交种茎叶产量与品质性状之间相关关系,以96份能源高粱杂交种为材料,采用完全随机区组设计,在华北平原自然环境差异较大的2个试点地区栽培,测定茎和叶产量及7个茎叶中与能源相关成分含量.结果 表明,能源高粱杂交种能源相关性状变异系数在山西省介休市和河北省涿州市分别为3.7％～61.3％和4.8％～60.0％....

Correlations between yield and energy-related quality traits of sorghum hybrids stems and leaves

In order to analyze the correlations between yield and energy-related quality traits of stems and leaves, 96 energy sorghum hybrids were taken as study object. Field experiments in complete random block design were conducted in two sites with distinct differences in environmental condition in North China. The coefficients of variation in the measured traits of the 96 hybrids ranged between 3. 7%-61. 3% and 4. 8%-60. 0% in Jiexiu and Zhuozhou, respectively. The coefficient of variation of stem and leaf yield and theoretical ethanol yield were the largest among the studied traits. The stem yield and leaf yield were positively correlated. Concerning the same energy-related quality traits, the majority of those traits were positively correlated, and the theoretical ethanol yield of stem and leaf were positively correlated. It indicates that yield and quality traits stem and leaf can be simultaneously improved to achieve high theoretical ethanol yield. The measured traits can be compressed into four principal components in both sites. The first two principal components are straw yield factor and stem carbohydrate factor in Jiexiu and Zhuozhou site. Overall, the straw yield factor and stem carbohydrate factor are the favorable traits that should be paid more attention to.