Physiological and biochemical changes in rosana western wheatgrass seed during seed deterioration 藍(lán)莖冰草種子劣變過程中生理生化變化
( 3 ) wheatgrass could reduce water dissipation by shutting up stoma and let some leaves wither 3 、冰草植株在干旱條件下關(guān)閉氣孔,以減少水分散失,葉片萎蔫,以減少蒸騰面積。
( 3 ) wheatgrass could control na + transport to upground by withholding na + in root which can keep the balance of ion of upground 3 、冰草植株通過將na ~ +截留在根部,控制na ~ +向地上部分的運輸,以維持植株代謝旺盛部位的離子平衡。
( 2 ) wheatgrass could restrain the growth of upground of plants more than that of underground , so the plant could absorb more water and reduced transpiration 2 、冰草植株對地上部分生長的抑制大于對地下部分生長的抑制,這樣可以增強根系吸水,較少葉片的蒸騰失水。
The reasons of strong salt resistance had three aspects : ( 1 ) wheatgrass could reduce the potentiality penetration in cell by increasing the osmoregulatotory substance , so the plants could absorb more water by roots 得出冰草植株耐鹽有三個原因: 1 、冰草植株能夠增加可溶性滲透調(diào)節(jié)物質(zhì),以降低細(xì)胞滲透勢,保持植株根系吸水。