摘要
Ca植物春小麦幼苗叶片累积脯氨酸的数量随水分胁迫时间和强度递增,累积的数量与品种的抗旱性没有相关性。C_4植物玉米和高粱累积脯氨酸的数量低于小麦,但高粱多于玉米。CAM植物落地生根脯氨酸含量略有变化。旱生植物细枝岩黄芪的同化枝累积脯氨酸的数量高于中生植物钻天杨和槐的叶片,而梭梭的同化校则低于槐而高于钻天杨。表明这些植物累积脯氨酸的数量与它们的抗旱性无夫。因此似不宜用脯氨酸数量的多少作为植物抗旱性的生理指标。
Proline content of wheat leave was increa-
sed with time and intensity of water stress. But
there is not correlation of the increase of proline
content and drought resistance of variety (Table
1). C_4 plant(sorghum and maize) accumulates
less proline than C_3 plant (wheat) (Table 2).
Proline content of CAM plant(Kalanchoe punnata)
is the least, only increases lightly (Table 3, 4).
Proline content of assimilating branch in Hedy-
sarum scoparium of xerophyte is more than that
of leave Populus nigra and Sophora japonica of
mesophyte (Table 5). Proline content of as-
similating branch of Haloxylon ammodendron
accumulated is more than that of P.nigra but
less than that of S japonica (Table 6).
The accumulation of proline mentioned
above is not correlated with their drought re-
sistance in the plant under water stress, so isn't
suited for the criterion of plant drought resis-
tance
关键词
水分胁迫
脯氨酸
抗旱性
water stress
proline
drought resistance
polyethylene glycol
