欧洲型黄瓜成株期耐热性鉴定指标的筛选及预测方程的建立  

Determination of Heat-tolerance Evaluation and Establishment of Mathematical Evaluation Model in Adult Stage of European Type Cucumber under Natural High Temperature

作　　者：但忠[1] 木万福[1,2] 苏银玲[1] 麻继仙[1,2] 杨龙[1,2] 袁建民[1] 张志星 杨红均[3] 

机构地区：[1]云南省农业科学院热区生态农业研究所,云南元谋651300 [2]云南思龙蔬菜种业发展有限责任公司,云南元谋651300 [3]云南省农业科学院农业经济与信息研究所,云南昆明650205

出　　处：《西南农业学报》2015年第5期2213-2217,共5页Southwest China Journal of Agricultural Sciences

基　　金：云南省农业厅推广项目(云南优质;抗病蔬菜新品种示范与推广)

摘　　要：为筛选欧洲型黄瓜成株期的耐热性鉴定指标,建立可靠的欧洲型黄瓜耐热性数学评价模型,以填补欧洲型黄瓜耐热性的研究空白,为今后大规模品种耐热性的评价奠定基础。在温度为36/25℃(昼/夜)的自然高温条件下,植株成株期的株高、叶面积、茎粗、主茎雌花数、化瓜数、畸形瓜数等11个指标的变化,并运用主成分分析和逐步回归等方法筛选耐热性鉴定指标。通过主成分分析将7个单项指标转换成2个相互独立的综合指标;通过逐步回归建立了欧洲型黄瓜成株期耐热性评价数学模型D=0.72175-0.04328,估计精度大于85.52%,并筛选畸形瓜数为耐热性鉴定指标。在相同高温逆境条件下,通过测定畸形瓜数,就可对不同基因型温室黄瓜的耐热性进行鉴定和预测。In order to screen morphological indexes of European type cucumber for heat tolerance in adult stage and establish the mathematical evaluation model,which would supply the research of European type cucumber on heat tolerance and evaluation on heat tolerance of a large number of cucumber varieties,the evaluation of heat tolerance about eleven indexes,stem height,stem diameter,leaf area,first fruit,female flower of main stem,abnormal fruit in adult stage of six different genotype cucumber under natural high temperature were evaluated by principal components analysis and regression analysis. The result showed that the 7 single indexes could be classified into 2 independent comprehensive components. The mathematical evaluation model for Europe type cucumber heat tolerance in adult stage was established,D =0. 72175- 0. 04328 DF,and the evaluation accuracy of the equation was higher than 85. 52 %. The abnormal fruit closely related to the heat tolerance were screened. Determination of the abnormal fruit under same condition could be used for rapid identification and predication of other Europe type cucumber varieties.

关 键 词：欧洲型黄瓜 耐热性 主成分分析 逐步回归 

分 类 号：S642.2[农业科学—蔬菜学]