欢迎访问《中国农学通报》,

中国农学通报 ›› 2023, Vol. 39 ›› Issue (19): 124-130.doi: 10.11924/j.issn.1000-6850.casb2022-0578

• 畜牧·动物医学·蚕·蜂 • 上一篇    下一篇

甜高粱饲草品质综合分析

张伟(), 张阳, 王官, 邵荣峰, 薛丁丁, 常玉卉, 阎昊, 赵威军()   

  1. 山西农业大学高粱研究所,山西晋中 030600
  • 收稿日期:2022-07-11 修回日期:2022-09-08 出版日期:2023-07-05 发布日期:2023-07-03
  • 通讯作者: 赵威军,男,1973年出生,山西阳城人,副研究员,学士,主要从事甜高粱遗传育种研究。通信地址:030600 山西省晋中市榆次区蕴华西街238号,Tel:0354-8593500,E-mail:zhaowj2000@126.com
  • 作者简介:

    张伟,男,1989年出生,山西柳林人,助理研究员,硕士,主要从事甜高粱遗传育种研究。通信地址:030600 山西省晋中市榆次区蕴华西街238号,Tel:0354-8593500,E-mail:

  • 基金资助:
    山西农业大学生物育种工程“抗蚜高粱亲本系创制以及新品种选育”(YZGC060)

Comprehensive Analysis of the Forage Quality of Sweet Sorghum

ZHANG Wei(), ZHANG Yang, WANG Guan, SHAO Rongfeng, XUE Dingding, CHANG Yuhui, YAN Hao, ZHAO Weijun()   

  1. Sorghum Research Institute, Shanxi Agricultural University, Jinzhong, Shanxi 030600
  • Received:2022-07-11 Revised:2022-09-08 Online:2023-07-05 Published:2023-07-03

摘要:

为探究饲用甜高粱不同饲草指标间的关系以及综合评价饲用甜高粱品系,提高饲用甜高粱育种进程,以新组配的13个甜高粱品系为研究材料,对19个饲草指标进行变异分析、相关性分析、主成分分析和聚类分析。结果表明,最能够反映饲草品质的粗蛋白、ADF(酸性洗涤纤维)、NDF(中性洗涤纤维)变异系数均小于10%,而淀粉、锤度和元素类指标变化范围较大,变异系数均大于15%,饲用甜高粱育种仍然需要创制高蛋白种质资源。相关性分析发现,ADF与NDF呈显著正相关(P<0.01),钙元素含量与总可消化养分、RFV(相对饲用价值)呈极显著正相关(P<0.01)。主成分分析将19个饲草指标综合为4个主成分,累计贡献率达到90.49%,综合分析表明J205、TP3、TP14、TP83、TP5等5个品种排名靠前,饲草品质综合表现较好。聚类分析把13个品系分为3类,其中J205、TP3为综合饲草品质优良的一类。

关键词: 甜高粱, 饲草品质, 主成分分析, 聚类分析, 相关分析

Abstract:

In order to explore the relationship between different forage indexes of forage sweet sorghum, comprehensively evaluate forage sweet sorghum varieties, and improve the breeding process of new varieties, 19 forage indexes of 13 sweet sorghum varieties were analyzed by variation analysis, correlation analysis, principal component analysis and cluster analysis. The results showed that the variation coefficient of crude protein, acid detergent fiber (ADF) and neutral detergent fiber (NDF), which could best reflect the quality of forage grass, were all less than 10%, while the variation coefficient of starch, Brix and element indexes were all greater than 15%. Therefore, it is necessary to develop high protein germplasm resources in forage sweet sorghum breeding. Correlation analysis showed that ADF was significantly positively correlated with NDF (P<0.01), and calcium content was significantly positively correlated with total digestible nutrients and relative forage value (RFV) (P<0.01). 19 forage indexes were divided into 4 principal components by principal component analysis, and the cumulative contribution rate reached 90.49%. The comprehensive analysis showed that the top 5 varieties were J205, TP3, TP14, TP83 and TP5, which had better comprehensive forage quality. The 13 varieties were divided into 3 groups by cluster analysis, among which, J205 and TP3 were the high comprehensive quality forage varieties.

Key words: sorghum, forage quality, principal component analysis, cluster analysis, correlation analysis