摘要
为野生割手密资源的合理利用以及中国草本能源植物的开发与利用提供参考,以21份野生割手密种质为材料,对21份野生割手密种质的生产性能进行评价。结果表明:所有供试材料均能完成整个生长发育周期,材料SAGS08081生育期最长,长达167天,材料SAGS08068生育期最短,为127天,前后相差达40天;供试的21份割手密种质材料生长高度以及速度变化规律基本一致,拔节期至开花期生长速度最快;生产性能指标中,变异幅度较大的是单株干重和分蘖数,变异系数分别为52.39%和46.30%;变异幅度最小的指标是茎节数,变异系数仅为14.99%;不同割手密材料单株产量差异较大,单株鲜草产量为98.30~1238.90g,平均单株鲜重为481.27g,单株干草产量为45.39~335.62g,平均单株干重为165.51g;聚类分析可将所有材料分为两大类,Ⅰ类材料的各项指标明显优于Ⅱ类材料。
Saccharum spontaneum is a common wild plant resource widely spread in China.In order to develop and utilize Saccharum spontaneum as a herbal energy plant,twenty-one wild accessions were assessed by production performance.The results were as follow:all accessions could finish a complete growth period.Accession SAGS08081 ' s growth period lasted 167 days as the longest one,whereas,accession SAGS08068 had the shortest growth period that was 127 days.Growth height and speed of twenty-one accessions varied almost the same,from jointing date to heading date,the speed of growth was the fastest.Among all production indexes,variation of individual dry yield and tiller number was the most significant,coefficient of variation was 52.39% and 46.30%,respectively.And number of internodes had the smallest coefficient of variation was only 14.99%.Yield of individuals was obviously different.Individual fresh yield ranged from 98.30 g to 1238.90 g,with an average 481.27 g.The dry yield was 45.39-335.62 g with an average 165.51 g.Cluster analysis divided all accessions into two groups,and accessions in group I were superior to group II at all indexes.
出处
《中国农学通报》
CSCD
2012年第3期206-212,共7页
Chinese Agricultural Science Bulletin
基金
国家牧草产业技术体系项目(CARS-35)
四川省"十二五"饲草育种攻关项目
关键词
割手密
物候期
生长速度
生产性能
产量
Saccharum spontaneum L.
phenophase
growth speed
production performance
yield