研究新麦草(P sa thy rostachy s juncea Bozo isky)种子在自然老化和人工老化过程中的生理生化变化。结果表明:在自然和人工老化过程中,种子发芽率、发芽指数、脱氢酶和酸性磷酸酯酶活性降低;发芽指数和酸性磷酸酯酶活性的变化先于发芽...研究新麦草(P sa thy rostachy s juncea Bozo isky)种子在自然老化和人工老化过程中的生理生化变化。结果表明:在自然和人工老化过程中,种子发芽率、发芽指数、脱氢酶和酸性磷酸酯酶活性降低;发芽指数和酸性磷酸酯酶活性的变化先于发芽率,这是种子质量的敏感指标;种子可溶性糖泄漏随着老化程度的增加而增加;电导率与种子劣变程度的相关不显著。展开更多
The effects of temperature and moisture content on physiological and biochemical characteristics of Chinese Fir and Masson Pine seeds were investigated during a year storage period. The investigating indexes are germi...The effects of temperature and moisture content on physiological and biochemical characteristics of Chinese Fir and Masson Pine seeds were investigated during a year storage period. The investigating indexes are germination percentage, the relative electrical conductivity, SOD and POD activity as well as MDA content. The results showed that 1) the germination percentage of both Chinese Fir and Masson Pine seeds were found to reduce over the storage duration when stored in different temperature and moisture content regime. But there are significant difference in the extent of reduction among different temperature and moisture content regime. The best storage condition for Chinese Fir seeds is in the temperature of -30 ℃ or -18 ℃ with the moisture content of 4%, and the best storage condition for Masson Pine seeds is in the temperature of 3 ℃ and -18 ℃ with moisture content of 4%. 2) The relative electrical conductivity, SOD and POD activity as well as MDA content of both Chinese Fir and Masson Pine seeds were changed slowly while stored in low temperature and low moisture content. When the storage temperature and moisture content were increased, however, the relative electrical conductivity and MDA content gradually increased and SOD and POD activity showed a tendency of reduction. 3) When stored in -30 ℃ for 360 days, the seed of Chinese Fir with a moisture content of 4% has the smallest deteriorative rate whereas -18 ℃ is the case of Masson Pine seeds with the same moisture content.展开更多
文摘研究新麦草(P sa thy rostachy s juncea Bozo isky)种子在自然老化和人工老化过程中的生理生化变化。结果表明:在自然和人工老化过程中,种子发芽率、发芽指数、脱氢酶和酸性磷酸酯酶活性降低;发芽指数和酸性磷酸酯酶活性的变化先于发芽率,这是种子质量的敏感指标;种子可溶性糖泄漏随着老化程度的增加而增加;电导率与种子劣变程度的相关不显著。
文摘The effects of temperature and moisture content on physiological and biochemical characteristics of Chinese Fir and Masson Pine seeds were investigated during a year storage period. The investigating indexes are germination percentage, the relative electrical conductivity, SOD and POD activity as well as MDA content. The results showed that 1) the germination percentage of both Chinese Fir and Masson Pine seeds were found to reduce over the storage duration when stored in different temperature and moisture content regime. But there are significant difference in the extent of reduction among different temperature and moisture content regime. The best storage condition for Chinese Fir seeds is in the temperature of -30 ℃ or -18 ℃ with the moisture content of 4%, and the best storage condition for Masson Pine seeds is in the temperature of 3 ℃ and -18 ℃ with moisture content of 4%. 2) The relative electrical conductivity, SOD and POD activity as well as MDA content of both Chinese Fir and Masson Pine seeds were changed slowly while stored in low temperature and low moisture content. When the storage temperature and moisture content were increased, however, the relative electrical conductivity and MDA content gradually increased and SOD and POD activity showed a tendency of reduction. 3) When stored in -30 ℃ for 360 days, the seed of Chinese Fir with a moisture content of 4% has the smallest deteriorative rate whereas -18 ℃ is the case of Masson Pine seeds with the same moisture content.
