芝麻花期叶绿素含量变化及其与产量性状的相关分析.pdfVIP

2007年 12月 中国油料作物学报 2007，29(3)：443— 447 Chinese journal of oil crop sciences 芝麻花期叶绿素含量变化及其与产量性状的相关分析 刘红艳，赵应忠 (中国农业科学院油料作物研究所，湖北 武汉 430062) 摘要：VAllO份芝麻栽培品种和5份野生资源种为研究材料，分析了芝麻花期叶绿素含量的变化规律及其与产 量性状的相关性。结果表明：不同品种间的叶绿素含量差异较大；野生芝麻的叶绿素含量显著高于栽培品种。各种 材料叶绿素含量从初花期到终花期不断升高；不同阶段间叶绿素含量相关显著；叶绿素含量与株高、果轴长度和千 粒重呈显著正相关，而与单株产量仅呈中等强度的正相关。在分组方差分析中，高叶绿素含量品种组与低叶绿素含 量品种组之间的单株产量差异显著，表明通过选育高叶绿素含量的芝麻新品种来实现增产是可行的。 关键词：芝麻；叶绿素；产量性状；相关分析 中图分类号：$565．301 文献标识码：A 文章编号：1007—9084(2007)04--0443—05 Dynamic analysis of leaf chlorophyll content during blossom and their correlation with yield traits in sesame I IU Hong—yan，ZHAO Ying—zhong (Oil Crops Research Institute，CAAS，Wuhan 430062，China) Abstract：In this study，1 1 0 sesame cultivars and 5 wild collections were used to investigate the differences of leaf chlorophyll content(CC)at early bloom (EB)，medium bloom (MB)and full bloom (FB)stages，and its correlation with yield traits．The result showed that the variation of CC was small within cultivars while much larger among cultivars．Compared to cultivars，wild collections had significantly higher CC．During the development，CC increased significantly from EB to MB，and from MB to FB，and with a very high correlation．CC was significantly correlated with plant height，capsule axis length and 1000一seed weight，while only moderately correlated with yield per plant(YPP)．By dividing the cultivars into high，medium and low CC groups，we found that YPP of high CC group were significantly higher than medium CC group，and the low CC group．Thus，it seams to be a feasible approach to increase seed yield by improving CC in sesame． Key words：Sesame；Chlorophyll content；Yield traits；Correlation analysis 芝麻是我国重要的油料作物之一，也是传统的 用产物的多少，通过在单位时间内积