草业科学
草業科學
초업과학
PRATACULTURAL SCIENCE
2010年
4期
134-138
,共5页
植物%逆境胁迫%脯氨酸%环境梯度
植物%逆境脅迫%脯氨痠%環境梯度
식물%역경협박%포안산%배경제도
plants%adversity stress%environmental gradient模拟放牧强度下割草地鸭茅可溶性糖
以甘南亚高山草甸植物为研究样本,分析了不同环境梯度条件下的6种植物:莓叶委陵菜Potentilla fragarioides、火绒草Leontopodium leontopodioides、矮嵩草Kobresia humilis、棘豆Oxytropis kansuensis、狼毒Stellera chamaejasme、金露梅Potentilla fruticosa的游离脯氨酸的积累与变化.结果表明:随着生境(包括土壤水分、光照、温度等)的变化,6种植被叶片内脯氨酸含量随着从阴坡、半阴半阳坡、阳坡环境的变化都有不同程度的增加;而且,植物品种的不同,脯氨酸含量的增加幅度有差异,进一步可以认为叶片内脯氨酸含量的高低可作为衡量植物抗逆性的指标.
以甘南亞高山草甸植物為研究樣本,分析瞭不同環境梯度條件下的6種植物:莓葉委陵菜Potentilla fragarioides、火絨草Leontopodium leontopodioides、矮嵩草Kobresia humilis、棘豆Oxytropis kansuensis、狼毒Stellera chamaejasme、金露梅Potentilla fruticosa的遊離脯氨痠的積纍與變化.結果錶明:隨著生境(包括土壤水分、光照、溫度等)的變化,6種植被葉片內脯氨痠含量隨著從陰坡、半陰半暘坡、暘坡環境的變化都有不同程度的增加;而且,植物品種的不同,脯氨痠含量的增加幅度有差異,進一步可以認為葉片內脯氨痠含量的高低可作為衡量植物抗逆性的指標.
이감남아고산초전식물위연구양본,분석료불동배경제도조건하적6충식물:매협위릉채Potentilla fragarioides、화융초Leontopodium leontopodioides、왜숭초Kobresia humilis、극두Oxytropis kansuensis、랑독Stellera chamaejasme、금로매Potentilla fruticosa적유리포안산적적루여변화.결과표명:수착생경(포괄토양수분、광조、온도등)적변화,6충식피협편내포안산함량수착종음파、반음반양파、양파배경적변화도유불동정도적증가;이차,식물품충적불동,포안산함량적증가폭도유차이,진일보가이인위협편내포안산함량적고저가작위형량식물항역성적지표.
The accumulation and variation patterns of free proline in 6 plant species (Potentilla fragarioides, Leontopodium nanum, Kobresia humilis, Oxytropis kansuensis, Stellera chamaejasme and Potentilla fruticosa) distributed in subalpine meadow of Gannan were studied at different environmental gradients. The results indicated that along with the change of environment (including soil water, temperature and sunlight) from the shade slope to sunlight slope, the concentration of free proline in leaf of 6 species increased in certain degree. The increasing range of free proline concentration among different species was different. The contents of praline could be used as an indicator for the resistance of plant.
