实验探究了不同温度下不同光质照射对菊科(Asteraceae)植物油麦菜(Lactuca sativa var Longifoliaf.Lam)种子萌发率的影响.结果表明,适当提高温度、红光和蓝光照射都可以促进种子萌发,远红光则抑制种子萌发,同时高温会诱导种子萌发对光...实验探究了不同温度下不同光质照射对菊科(Asteraceae)植物油麦菜(Lactuca sativa var Longifoliaf.Lam)种子萌发率的影响.结果表明,适当提高温度、红光和蓝光照射都可以促进种子萌发,远红光则抑制种子萌发,同时高温会诱导种子萌发对光的需求.可以推测光和温度对植物生命活动的调节是相互影响,共同作用.这一实验的开展及结果分析为"环境因素参与调节植物生命活动"这节内容提供了一手的教学资源.展开更多
By solution culture experiment, three wheat genotypes (Ttiticum aestivum L.) and two oilseed rape genotypes (Brassica napus L.) differing in Mn efficiency under Mn-deficient conditions were used to study mechanisms of...By solution culture experiment, three wheat genotypes (Ttiticum aestivum L.) and two oilseed rape genotypes (Brassica napus L.) differing in Mn efficiency under Mn-deficient conditions were used to study mechanisms of the difference in Mn efficiency between wheat and oilseed rape. The results showed that there were significant differences in the abilities of MnIV reduction and acidification in root rhizosphere between the two species. Compared with wheat, oilseed rape had much higher reducing capacity and intensity of rhizosphere acidification under Mn-deficient conditions. Moreover, the higher ratio of functional leaves Mn/old leaves Mn in oilseed rape than in wheat was also an important factor for the different Mn efficiencies between the two species.展开更多
文摘实验探究了不同温度下不同光质照射对菊科(Asteraceae)植物油麦菜(Lactuca sativa var Longifoliaf.Lam)种子萌发率的影响.结果表明,适当提高温度、红光和蓝光照射都可以促进种子萌发,远红光则抑制种子萌发,同时高温会诱导种子萌发对光的需求.可以推测光和温度对植物生命活动的调节是相互影响,共同作用.这一实验的开展及结果分析为"环境因素参与调节植物生命活动"这节内容提供了一手的教学资源.
基金Project (No. 39425013) supported by the National Natural Science Foundation of China.
文摘By solution culture experiment, three wheat genotypes (Ttiticum aestivum L.) and two oilseed rape genotypes (Brassica napus L.) differing in Mn efficiency under Mn-deficient conditions were used to study mechanisms of the difference in Mn efficiency between wheat and oilseed rape. The results showed that there were significant differences in the abilities of MnIV reduction and acidification in root rhizosphere between the two species. Compared with wheat, oilseed rape had much higher reducing capacity and intensity of rhizosphere acidification under Mn-deficient conditions. Moreover, the higher ratio of functional leaves Mn/old leaves Mn in oilseed rape than in wheat was also an important factor for the different Mn efficiencies between the two species.
