玉米自交系秸秆品质性状鉴定与评价

利用近红外漫反射光谱法,对50份常用普通玉米自交系和50份高油自交系秸秆的中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、可溶性糖(WSC)和粗蛋白(CP)4个品质性状进行了鉴定评价和相关性分析。结果表明,各品质性状变异较大,各性状自交系间差异均达极显著水平。不同品质性状变异程度不同,其中WSC含量变异最大,变异系数达34.23%。WSC与NDF、ADF极显著负相关,NDF与ADF含量极显著正相关。高油系表现为高WSC、CP和低NDF、ADF含量,总体上高油系秸秆品质优于普通玉米。

Identification and Evaluation of Stalk Quality Traits in Maize Inbred Lines

100 inbred lines,including 50 normal oil corn(NOC) and 50 high oil corn(HOC) inbred lines were identified and evaluated on four stalk quality traits such as neutral detergent fiber(NDF),acid detergent fiber(ADF),the water soluble carbohydrate(WSC) and crude protein(CP).The technique of near infrared diffuse reflectance spectroscopy(NIDRS) were used to determine these values.The results showed that every quality trait had highly significant variation,the coefficient of variation(CV) in WSC was the highest(34.23%).The correlation analysis among quality traits of inbred lines showed that WSC had a significant negative correlation with NDF and ADF at P<0.01,and NDF had a significant positive correlation with ADFCP at P<0.01.WSC and CP of HOC were higher than those of NOC,ADF and NDF were lower than those of NOC.In general,the stalk quality of HOC was superior to those of NOC obviously.