草业学报
草業學報
초업학보
PRATACULTURAL SCIENCE
2014年
4期
39-48
,共10页
刘春英%孙学映%朱体超%陈光蓉%郑章云
劉春英%孫學映%硃體超%陳光蓉%鄭章雲
류춘영%손학영%주체초%진광용%정장운
黑麦草%生产性能%灰色关联度分析%聚类分析%综合评估
黑麥草%生產性能%灰色關聯度分析%聚類分析%綜閤評估
흑맥초%생산성능%회색관련도분석%취류분석%종합평고
ryegrass%production performance%grey correlation analysis%hierachical clustering analysis%com-prehensive evaluation
为系统了解不同黑麦草品种的生产性能，筛选出优势品种，通过大田品比试验，采用方差分析、灰色关联度分析和系统聚类法对引进的9个黑麦草品种的10个主要性状进行生产性能比较及综合评估。结果表明，不同刈割茬次或生育时期的生产性能差异明显，第2茬次的黑麦草生长发育快，产量高、品质好。综合考虑，2-5月份是本地区利用黑麦草青饲、青贮的最佳时期。不同黑麦草品种的生产性能遗传差异也较大。其中，速生、特高、凯力3个品种的鲜、干草产量，分蘖力，叶茎比，粗蛋白含量，生长强度等指标方面优于对照，产量和品质得到了较好的兼顾，关联度排序位居前3位，被聚为一类，综合性状表现良好，是万州区极具推广前景的优势牧草品种。伊犁特虽分蘖力强、干物率高，但其综合评估关联度较低，被单独聚为一类，可作特殊的育种材料用；其他品种生产性能综合表现与对照相当，被聚为一类，在万州地区可适当推广种植。
為繫統瞭解不同黑麥草品種的生產性能，篩選齣優勢品種，通過大田品比試驗，採用方差分析、灰色關聯度分析和繫統聚類法對引進的9箇黑麥草品種的10箇主要性狀進行生產性能比較及綜閤評估。結果錶明，不同刈割茬次或生育時期的生產性能差異明顯，第2茬次的黑麥草生長髮育快，產量高、品質好。綜閤攷慮，2-5月份是本地區利用黑麥草青飼、青貯的最佳時期。不同黑麥草品種的生產性能遺傳差異也較大。其中，速生、特高、凱力3箇品種的鮮、榦草產量，分蘗力，葉莖比，粗蛋白含量，生長彊度等指標方麵優于對照，產量和品質得到瞭較好的兼顧，關聯度排序位居前3位，被聚為一類，綜閤性狀錶現良好，是萬州區極具推廣前景的優勢牧草品種。伊犛特雖分蘗力彊、榦物率高，但其綜閤評估關聯度較低，被單獨聚為一類，可作特殊的育種材料用；其他品種生產性能綜閤錶現與對照相噹，被聚為一類，在萬州地區可適噹推廣種植。
위계통료해불동흑맥초품충적생산성능，사선출우세품충，통과대전품비시험，채용방차분석、회색관련도분석화계통취류법대인진적9개흑맥초품충적10개주요성상진행생산성능비교급종합평고。결과표명，불동예할치차혹생육시기적생산성능차이명현，제2치차적흑맥초생장발육쾌，산량고、품질호。종합고필，2-5월빈시본지구이용흑맥초청사、청저적최가시기。불동흑맥초품충적생산성능유전차이야교대。기중，속생、특고、개력3개품충적선、간초산량，분얼력，협경비，조단백함량，생장강도등지표방면우우대조，산량화품질득도료교호적겸고，관련도배서위거전3위，피취위일류，종합성상표현량호，시만주구겁구추엄전경적우세목초품충。이리특수분얼력강、간물솔고，단기종합평고관련도교저，피단독취위일류，가작특수적육충재료용；기타품충생산성능종합표현여대조상당，피취위일류，재만주지구가괄당추엄충식。
The production performance of nine different ryegrass cultivars were investigated to screen for the dominant varieties using a field variety test.The production performances were compared and evaluated by va-riance analysis,grey correlation analysis and Hierachical clustering analysis of ten traits.The production per-formances differed on the basis of different cutting times or growth stages:the 2nd cutting of ryegrass had fas-ter growth and development with higher yields and quality.The best growth period of ryegrass for green-feed and silage is from February to May.The production performance of the different cultivars was also related to genetic differences.Fresh/hay yield ratios,tillers,stem/leaf ratios,crude protein content and growth intensity of Diploid,Tetragold and Calibrawere better than those of the control (Abundat).These three species were ranked in the top three places using grey correlation degree analysis and were clustered into one group using Hi-erachical clustering analysis.Their comprehensive characteristics performed well,therefore they could be used as dominant forage species with a good prospect for popularization and application in Wanzhou.Ellett had a lower weighted incidence degree but higher tiller and ratio of dry matter than the others,and it was the only one in its group,so it could be used as a special breeding material.The others all clustered into the same group and had a comprehensive performance equivalent to that of the control so that they could be appropriately plan-ted in similar situations.
