Comparison of the production performance of ryegrass cultivars and screening of dominant varieties

doi:10.11686/cyxb20140405

Abstract

Abstract: 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 variance analysis,grey correlation analysis and Hierachical clustering analysis of ten traits. The production performances differed on the basis of different cutting times or growth stages: the 2nd cutting of ryegrass had faster 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 Hierachical 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 planted in similar situations.

CLC Number:

S816

LIU Chun-ying,SUN Xue-ying,ZHU Ti-chao,CHEN Guang-rong,ZHENG Zhang-yun. Comparison of the production performance of ryegrass cultivars and screening of dominant varieties[J]. Acta Prataculturae Sinica, 2014, 23(4): 39-48.

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