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以NC×711 为亲本发展的番茄BC1S1 群体,通过溶液培养试验研究了筛选番茄耐盐性的若干指标。结果表明:自五叶期移栽时起经250 m m ol/L NaCl胁迫12 周后,119 个家系单株平均产量呈正态分布,而且出现高度分离。以盐胁迫下的产量作为抗盐指标,与14 个表型参数进行了线性相关分析,结果为胁迫四周时相对株高(4RPH)、座果率(FSR)、家系平均花数(FLN)、家系平均幼果数(FRN)与盐胁迫下的产量呈极显著正相关;与胁迫6 周时顶部功能叶SPAD 值呈极显著正相关,其它因子与胁迫下的产量未达显著相关水平。对产量与4RPH,FSR,FLN,FRN 和SPAD 等表型参数的步回分析与麦夸特参数模型估计表明,可以利用4RPH,SPAD 等表型参数作为番茄耐盐性筛选指标。
The tomato BC1S1 population, which was developed with NC × 711 as its parent, was used to study some indicators of salt tolerance in tomato by solution culture. The results showed that the average yield per plant of 119 families was normal distribution and highly separated after 12 weeks of 250 m mol / L NaCl stress after transplanting from the five-leaf stage. The results of linear correlation analysis with 14 phenotypic parameters showed that the relative plant height (4RPH), fruit set rate (FSR), average pedigree number (FLN) There was a significant positive correlation between FRN and the yield under salt stress. There was a significant positive correlation between the FRN and the SPAD value of the top functional leaves at 6 weeks. The yield of the other factors under the stress did not reach a significant level. The stepwise analysis of yield and 4PHH, FSR, FLN, FRN and SPAD phenotype parameters and the McQuay parameter model estimation indicated that the phenotypic parameters such as 4RPH and SPAD could be used as the screening index of salt tolerance in tomato.