Impact of drought on flowering, yield and quality parameters in diverse genotypes of tomato ( Solanum lycopersicum L.)
Impact of drought on flowering, yield and quality parameters in diverse genotypes of tomato ( Solanum lycopersicum L.)
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干旱对不同基因型番茄（Solanum lycopersicum L.）开花、产量和品质参数的影响
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Srividhya
中科院分区：
文献类型：
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作者：
R. Sivakumar;S. Srividhya
在防雨棚的田间条件下研究了干旱胁迫对番茄（Solanum lycopersicum）基因型开花、产量和品质的影响。移栽后第一天根据土壤田间持水量施加干旱条件。采用因子随机区组设计对十种基因型进行了实验，并进行了三次重复和两种处理，即 1.0 IW/CPE 和 0.5 IW/CPE 田间容量。当胁迫从 100% 田间持水量增加到 50% 田间持水量时，叶绿素指数、可溶性蛋白质含量、开花天数、蔗糖磷酸合酶 (SPS) 活性、果实体积、果实直径、产量和花脱落百分比增加均有所降低。在干旱条件下观察到 TSS 和番茄红素显着增加。基因型 LE 118、LE 57 和 LE 114 显示可溶性蛋白质含量的减少明显较少；干旱期间SPS活性和果实产量被认为是耐旱的。基因型 LE 1 和 LE 125 的可溶性蛋白含量、SPS 活性最低，最终产量较差，被认为对干旱敏感。
The effect of drought stress on flowering, yield and quality of tomato ( Solanum lycopersicum ) genotypes was investigated under field conditions in rainout shelter. The drought condition was imposed on the first day after trans-planting based on field capacity of soil. Experimentation was undertaken with ten genotypes adopting Factorial Randomized Block Design with three replications and two treatments viz., 1.0 IW/CPE and 0.5 IW/CPE field capacity. As the stress increased from 100% field capacity to 50% field capacity, reductions in chlorophyll index, soluble protein con-tent, days to flower initiation, sucrose phosphate synthase (SPS) activity, fruit volume, fruit diameter, yield and increased flower abscission percentage were noted. Significant increases in TSS and lycopene were observed under drought. The genotypes LE 118, LE 57 and LE 114 showed significantly less reduction in soluble protein content; SPS activ-ity and fruit yield during drought were considered as drought tolerant. Genotypes LE 1 and LE 125, which gave the lowest soluble protein content, SPS activity and ultimately poor yield, were considered as drought susceptible.