旨在为高粱耐盐种质资源的开发利用及耐盐新种质的创新提供一定的理论依据。选用20份高粱种质作为试验材料,采用150 mmol/L Na Cl溶液进行处理,置于人工气候培养室,测定发芽率、发芽势等相关指标;将20份材料置于25℃恒温培养箱中进行催...旨在为高粱耐盐种质资源的开发利用及耐盐新种质的创新提供一定的理论依据。选用20份高粱种质作为试验材料,采用150 mmol/L Na Cl溶液进行处理,置于人工气候培养室,测定发芽率、发芽势等相关指标;将20份材料置于25℃恒温培养箱中进行催芽,用150 mmol/L Na Cl溶液浇灌,以等量的浇水为对照,调查并比较幼苗成活率、生长速率及枯萎指数。采用隶属函数进行相关性分析,并进行聚类分析。结果表明,在150 mmol/L盐胁迫下,‘3438’、‘航天育种SP42’、‘09305R’、‘3560R’品种的发芽率高于对照,其他指标均小于对照。20份材料中,在芽期鉴选出耐盐材料4份,苗期筛选出3份;相关性大小顺序为相对芽长>相对根长>相对植株鲜重>发芽势;20份材料分成高度耐盐型、耐盐型、中等耐盐型、盐敏感型和高度盐敏感型品种5类。确定150 mmol/L Na Cl选定为高粱品种萌发期耐盐性鉴定的标准盐浓度,确定发芽率、发芽势、根长、叶长、植株鲜重可用于高粱耐盐性的鉴定指标。展开更多
Based on the fact that only high saline water irrigated to the shelterbelt along the Tarim Desert Highway, the experiment about three species with six degree of salinity was carried out to analyze the relation between...Based on the fact that only high saline water irrigated to the shelterbelt along the Tarim Desert Highway, the experiment about three species with six degree of salinity was carried out to analyze the relation between chlorophyll content and salt stress. The results show that: (1) the chlorophyll content of tree species decreases with aggravating the salt stress, which explains that salt stress can affect chlorophyll accumulation of three plants; (2) from chlorophyll content with different salinity, the chlorophyll content of three shrubs also has twice obvious decrease, which indicates that some plants adapt to salt stress. We divided salt resistance of the plant into three grades, namely the slight salt resistance, the heavy salt resistance and the extreme salt resistance; and (3) according to the experimental results, the salt stress of each plant was divided, which can provide theoretical guidance for constructing the shelterbelt along the Tarim Desert Highway.展开更多
文摘旨在为高粱耐盐种质资源的开发利用及耐盐新种质的创新提供一定的理论依据。选用20份高粱种质作为试验材料,采用150 mmol/L Na Cl溶液进行处理,置于人工气候培养室,测定发芽率、发芽势等相关指标;将20份材料置于25℃恒温培养箱中进行催芽,用150 mmol/L Na Cl溶液浇灌,以等量的浇水为对照,调查并比较幼苗成活率、生长速率及枯萎指数。采用隶属函数进行相关性分析,并进行聚类分析。结果表明,在150 mmol/L盐胁迫下,‘3438’、‘航天育种SP42’、‘09305R’、‘3560R’品种的发芽率高于对照,其他指标均小于对照。20份材料中,在芽期鉴选出耐盐材料4份,苗期筛选出3份;相关性大小顺序为相对芽长>相对根长>相对植株鲜重>发芽势;20份材料分成高度耐盐型、耐盐型、中等耐盐型、盐敏感型和高度盐敏感型品种5类。确定150 mmol/L Na Cl选定为高粱品种萌发期耐盐性鉴定的标准盐浓度,确定发芽率、发芽势、根长、叶长、植株鲜重可用于高粱耐盐性的鉴定指标。
基金Supported by Major Orientation Foundation of the CAS Innovation Program (Grant No. KZCX3-SW-342)CAS Action-Plan for West Development (Grant No. KZCX2- XB2-13)+1 种基金Major Scientific and Technological Special of Xinjiang Uygur Autono-mous Region (Grant No. 200733144-3)the research projects of the Tarim Branch of PetroChina Company Limited (Grant Nos. 971008090016 and 971008090017)
文摘Based on the fact that only high saline water irrigated to the shelterbelt along the Tarim Desert Highway, the experiment about three species with six degree of salinity was carried out to analyze the relation between chlorophyll content and salt stress. The results show that: (1) the chlorophyll content of tree species decreases with aggravating the salt stress, which explains that salt stress can affect chlorophyll accumulation of three plants; (2) from chlorophyll content with different salinity, the chlorophyll content of three shrubs also has twice obvious decrease, which indicates that some plants adapt to salt stress. We divided salt resistance of the plant into three grades, namely the slight salt resistance, the heavy salt resistance and the extreme salt resistance; and (3) according to the experimental results, the salt stress of each plant was divided, which can provide theoretical guidance for constructing the shelterbelt along the Tarim Desert Highway.