江苏农业学报
江囌農業學報
강소농업학보
Jiangsu Journal of Agricultural Sciences
2015年
5期
984-994
,共11页
邵初阳%何晓兰%徐照龙%张大勇%黄益洪%卫培培%许玲%刘晓庆%郭士伟%彭陈%葛婷婷%王为
邵初暘%何曉蘭%徐照龍%張大勇%黃益洪%衛培培%許玲%劉曉慶%郭士偉%彭陳%葛婷婷%王為
소초양%하효란%서조룡%장대용%황익홍%위배배%허령%류효경%곽사위%팽진%갈정정%왕위
甜高粱%农艺性状%相关性%主成分分析%遗传多样性%聚类分析
甜高粱%農藝性狀%相關性%主成分分析%遺傳多樣性%聚類分析
첨고량%농예성상%상관성%주성분분석%유전다양성%취류분석
sweet sorghum%agronomic trait%correlation%principal component analysis%genetic diversity%cluste-ring analysis
对在南京地区种植的88份国内外甜高粱种质资源的株高、茎粗、茎节数、茎秆鲜质量、整株榨汁率、整株锤度及始花期7个主要数量农艺性状进行了调查与测定，并进行了相关性、遗传多样性、主成分分析及聚类分析。这些种质资源各性状变异系数为22.62%~52.51%，遗传多样性指数为1.83~2.03。从7个性状中提取出2个主成分进行主成分分析，贡献值分别为64.947%和18.285%。第1主成分与株高、茎粗、茎节数、茎秆鲜质量及始花期的相关性都较高，第2主成分与出汁率和锤度相关系数较高。聚类分析可将88份甜高粱资源分为6个类群，从Ⅱ和Ⅲ类群中可以选出适合密植的早熟中秆材料，如甜选35、甜选37及甜选39等；从Ⅳ和Ⅴ类群中可选出植株高大、锤度高的晚熟材料，如甜选160、宁甜选6及黑穗芦稷等；从Ⅵ类群可以选出生育期适中的材料，如甜选33、甜选61及甜选133等。表明供试的88份甜高粱种质资源具有丰富的遗传多样性。
對在南京地區種植的88份國內外甜高粱種質資源的株高、莖粗、莖節數、莖稈鮮質量、整株榨汁率、整株錘度及始花期7箇主要數量農藝性狀進行瞭調查與測定，併進行瞭相關性、遺傳多樣性、主成分分析及聚類分析。這些種質資源各性狀變異繫數為22.62%~52.51%，遺傳多樣性指數為1.83~2.03。從7箇性狀中提取齣2箇主成分進行主成分分析，貢獻值分彆為64.947%和18.285%。第1主成分與株高、莖粗、莖節數、莖稈鮮質量及始花期的相關性都較高，第2主成分與齣汁率和錘度相關繫數較高。聚類分析可將88份甜高粱資源分為6箇類群，從Ⅱ和Ⅲ類群中可以選齣適閤密植的早熟中稈材料，如甜選35、甜選37及甜選39等；從Ⅳ和Ⅴ類群中可選齣植株高大、錘度高的晚熟材料，如甜選160、寧甜選6及黑穗蘆稷等；從Ⅵ類群可以選齣生育期適中的材料，如甜選33、甜選61及甜選133等。錶明供試的88份甜高粱種質資源具有豐富的遺傳多樣性。
대재남경지구충식적88빈국내외첨고량충질자원적주고、경조、경절수、경간선질량、정주자즙솔、정주추도급시화기7개주요수량농예성상진행료조사여측정，병진행료상관성、유전다양성、주성분분석급취류분석。저사충질자원각성상변이계수위22.62%~52.51%，유전다양성지수위1.83~2.03。종7개성상중제취출2개주성분진행주성분분석，공헌치분별위64.947%화18.285%。제1주성분여주고、경조、경절수、경간선질량급시화기적상관성도교고，제2주성분여출즙솔화추도상관계수교고。취류분석가장88빈첨고량자원분위6개류군，종Ⅱ화Ⅲ류군중가이선출괄합밀식적조숙중간재료，여첨선35、첨선37급첨선39등；종Ⅳ화Ⅴ류군중가선출식주고대、추도고적만숙재료，여첨선160、저첨선6급흑수호직등；종Ⅵ류군가이선출생육기괄중적재료，여첨선33、첨선61급첨선133등。표명공시적88빈첨고량충질자원구유봉부적유전다양성。
Seven major agronomic traits, including plant height, stem diameter, node number per stem, plant fresh weight, juice yield per plant, brix and first-flowering date, of eighty-eight domestic and foreign sweet sorghum cultivars planted in Nanjing area, were measured. The correlation, genetic diversity, principal components analy-sis and clustering were analyzed. The coefficients of varia-tion and genetic diversity index of all agronomic characters ranged from 22. 62%-52. 51% and 1. 83-2. 03, respectively. Two principal components (PCs) were extracted from seven agronomic traits by principal component analysis, and their contributions were 64. 947% and 18. 285%, respectively. PCⅠ showed higher correlations with five agronomic traits of plant height, stem diameter, node number per stem, plant fresh weight and first-flowering date, however, PCⅡ exhibited closer relationships with juice yield per plant and brix. Eighty-eight sweet sorghum cultivars were classified into six groups by clustering analysis. Early maturing cultivars suitable for compact planting were selected from groupsⅡandⅢincluding Tianxuan35, Tianxuan37,Tianxuan39. Cultivars with mod-erate growth durations were selected from VI group, such as Tianxuan33, Tianxuan61, Tianxuan133. And late-maturing cultivars with higher biomass and brix were selected form groupsⅣandⅤ, such as Tianxuan160, Ningtianxuan6, Heisui-luji. The results indicated that the genetic diversity was abundant in 88 sweet sorghum germplasms.
