| By field experiments, study the impact of different periods of drought on foxtail milletbiological charactetristics and physiologolical and biochemical characteristics. Compares theresistant differences exist amoung varieties, study the relationship between biologicalcharacteristics and physiological and biochemical indicators and drought resistance of foxtailmillet. Selecting the biological characteristies and physiological and biochemical indicators ofresistance evaluation of foxtail millet drough. Evaluation of foxtail millet drought resistance toprovide basis and guidance for using the foxtail millet resources and foxtail millet breeding theconclusions are as fllows:1.Under drought condition, morphological and development traits foxtail millet isdifference,according to self-regulation selected,Jointing stage: leaf growth index,Leaf length,leafwide, high; Heading stage: The days of delayed×heading date, heading number/survival numberon Drought area; Ripening stage:grain weigh/ear, biomass,ear length, ear diameter,(SU) topsecond leaf length,(SLW)top second leaf wide; These indicators are in highly significant positivecorrelation, they can be used as good parameters for foxtail millet drought resistance indentifyingindicators, it also can be used for evaluating the drought resistance of foxtail millet resource.2.In order to resist hurting from drought, foxtail millet product acting under drought.Selecting four physiological and biochemical indicators, relative water content, proline content,relative conductivity, chlorophy relative content(spad), by determine the indicators ofphysiological and biochemical. they can be used as good paranmeters for foxtail millets droughtresistance identifying indicators, it also can be used for evaluating the drought, resistance offoxtail millets.3.Comprehensive evaluation selected, Highly resistant varieties:56(Chibaigu),3(Xiaobaigu),41(Zhuyeqing),30(Huangtingdaobaqi),47(Qingjuguzi),48(Maomaogu). Non-resistant varieties:(Honggu),1(Sanfanbai),5(Shijianzi),22(Qisifeng),36(Neigu2hao),77(Caogu). |
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