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首页> 外文期刊>Acta Horticulturae >Effects of water stress and temperature on sod activity, growth and yield of tomato
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Effects of water stress and temperature on sod activity, growth and yield of tomato

机译：水分胁迫和温度对番茄草皮活性，生长和产量的影响

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摘要

Effects of water stress and temperature on Superoxide dismutase (SOD) activities, growth and yield were studied in a drought-sensitive King Fukuju (KF) and drought-tolerant TM 0126 (TM) cultivar of tomato in order to obtain fundamental information for breeding drought tolerant cultivars in Bangladesh. The reduction in dry matter production, fruit yield and yield related characteristics by water stress was less pronounced in TM than KF in both 30/25 deg C (HT) and 23/18 deg C (MT) regimes. Yield wassignigicantly higher at MT than HT in both cultivars. Temperature had no effect on dry matter production in TM, but in KF the reduction of dry matter by water srress was larger at HT than MT. Leaf water potential (#psi#) was reduced by water stress in both temperature regimes in both cultivars. #psi# was decreased more sharply in KF than TM and lower #psi# was observed at HT than MT. SOD activities were significantly increased by the water stress treatment in both cultivars, but the increase was more conspicuous in TM than KF in both temperature ragimes. SOD activities were higher at HT than MT in both cultivars. SOD activities are considered to be a useful criterion for drought tolerance in tomato.
机译：研究了水分胁迫和温度对番茄的干旱敏感King Fukuju（KF）和耐旱TM 0126（TM）品种对超氧化物歧化酶（SOD）活性，生长和产量的影响，以获得育种干旱的基本信息。孟加拉国的耐性品种。在30/25℃（HT）和23/18℃（MT）的情况下，TM的干物质产量，水果产量和与水分有关的产量特性因水分胁迫而降低的效果不如KF显着。在两个品种中，MT的产量均显着高于HT。在TM中，温度对干物质的生产没有影响，但是在KF中，HT的水分胁迫对水分的减少大于MT。在两个品种的两个温度方案中，水分胁迫都降低了叶片水势（＃psi＃）。在KF中，＃psi＃的下降比TM更明显，而在HT的＃psi＃则比MT更低。在两个品种中，通过水分胁迫处理，两个品种的SOD活性均显着增加，但TM的增幅比KF显着。在两个品种中，HT的SOD活性均高于MT。 SOD活性被认为是番茄抗旱性的有用标准。

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