2 . 2 . 2 effect of treatment of different salts on osmotic potential of cell sap of leaves the osmotic potential of leaf cell sap under treatm Peg處理下堿蓬幼苗葉片細胞汁液的滲透勢顯著高于naci處理下的滲透勢。
But more energy will be used if the plant depends mainly on the organic osmotica to regulate its osmotic potential . this is another reason which made suaeda salsa ca n ' t resist na2co3 stress effectively 然而,植物用有機物來進行滲透調(diào)節(jié)所消耗的能量比用無機離子多得多,這也是在na _ 2co _ 3脅迫下堿蓬生長受抑的又一原因。
2 . 2 effect of salt treatment on osmotic potential of cell sap of leaves 2 . 2 . 1 effect of naci treatment on osmotic potential of cell sap of leaves due to plants " obtaining a great deal of ions , the osmotic potential of naci treatment decreased with the increase of nacl concentration in medium 2 . 2鹽處理對堿蓬幼苗葉片細胞汁液滲透勢的影響2 . 2 . 1naci處理對堿蓬幼苗葉片細胞汁液滲透勢的影響naci處理下,植物吸收了大量的無機離子,使葉片細胞汁液的滲透勢迅速下降,并隨著鹽濃度的升高下降的程度逐漸增大。
With the increase of substrate salinity , the accumulated sodium and chloride increased . as a result , all tissues had considerablly lower osmotic potentials than that of the solution on which they were grown at 60 day after planting . changes in length , dry weight , water content , ion concentrations , osomotic potential , ion content of hypocotyls during culture indicated that viviparous hypocotyls not only afforded nutrition for seedling growth , but also reserved ions , thus charged the balance of ion concentration and osmotic potential of the seedling 鹽脅迫下幼苗單株葉面積下降的程度大于光合速率的降低,葉面積的減小是導致減產(chǎn)的主要原因;木欖幼苗各組分中的離子濃度以及含量隨栽培時間而變化;栽培初期剛萌根時,幼苗原胚軸中的離子滲漏到培養(yǎng)液中;此后隨著根系的發(fā)育以及芽的生長,幼苗轉(zhuǎn)為從培養(yǎng)液中吸收離子,并以吸收na 、 cl離子為主。
Length , diameter , density , fresh weight , dry weight , water content , osmotic potential and element concentrations ( ca , mg , na , k , cl ) were determined for each . seedling of b . gymnorrhiza and a . corniculatum were cultured for 60 days on various salinity of seawater ( 0 , 5 , 10 , 15 , 20 , 30 , 40 , 50 ) in green house . samples were taken at 3 , 7 , 11 , 15 , 22 , 30 , 45 and 60 days after planting , separated into root , hypocotyl , stem and leaf 本文研究了福建九龍江口木欖和桐花樹胎生繁殖體從果實形成到發(fā)育成熟過程中形態(tài)、生物量、含水量、胚軸密度、滲透勢、五種主要礦質(zhì)元素( ca 、 mg 、 na 、 k 、 cl )等的變化和溫室內(nèi)人工鹽度梯度栽培下木欖和桐花樹成熟繁殖體長成幼苗( 0 60d )過程中形態(tài)、生物量、含水量、滲透勢、光合蒸騰特性、五種主要礦質(zhì)元素( ca 、 mg 、 na 、 k 、 cl )等的變化;并且在野外自然條件下,跟蹤調(diào)查不同灘涂位置下秋茄成熟繁殖體定居成活、自然死亡狀況以及測定幼苗生長過程中( 1年)形態(tài)、生物量、含水量、光合蒸騰特性等的變化。