摘要
通过对甘农3#、甘农5#和游客紫花苜蓿多元杂交后代选育的36个株系及其亲本生长、产量、品质等相关指标的测定,采用灰色关联度理论,构造综合评价模型进行供试材料综合评价,筛选出速生12#、速生11#株系为最理想的优良株系,生长高度分别为105.44 cm、105.42 cm;生长速度分别为1.75 cm/d、1.68 cm/d;叶茎比分别为0.30、0.25;分枝数分别为23、17;鲜草产量分别为39.99 t/hm2、35.13 t/hm2;粗蛋白含量分别为19.95%、23.89%;相对饲用价值为153.15%、157.02%。多叶2#、速生5#、速生20#、速生21#等4个株系的平均生长高度、生长速度、叶茎比、分枝数、产量、粗蛋白含量和相对饲用价值等综合评价结果较为理想,可作为较好潜力的株系。
By measuring the indexes related to growth, yield, and quality of Gannong No. 3, Gannong No. 5, tourists alfalfa,and their hybrid offspring and combining gray systematic theory,we structured the comprehensive e- valuation model for all materials. The results showed that fast-growing 12# and fast-growing 11# were better strains, and the growth height were respectively 105.44 cm and 105.42 cm,growth rates were 1.75 cm and 1.68 cm every day, meanwhile stem-leaf ratios were 0.30 and O. 25, branch numbers were 23 and 17, fresh yield were 39.99 t/hm2 and 35.13 t/hm2, and then crude protein contents were 19.95% and 23.89%, relative feeding value were 153.15% and 157.02%. The comprehensive evaluation result on average growth height, growth rate, leaf-stem rati- o, branch number, fresh yield, crude protein content, and relative feeding value showed that multi-leaf 2#, fast-grow- ing #5,fast-growing 20#,and fast-growing 21# could be used as good potential strains.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2013年第5期945-953,共9页
Journal of Plant Genetic Resources
基金
农业部"牧草种质资源保种繁殖项目"(NB2130135)
国家牧草产业技术体系项目(CARS-35)
关键词
产量性状
品质性状
综合评价
株系筛选
yield traits
quality traits
comprehensive evaluation
select strains
