EFFECTS OF SALINITY ON SOME CITRUS SCION-ROOTSTOCK COMBINATIONS
EFFECTS OF SALINITY ON SOME CITRUS SCION-ROOTSTOCK COMBINATIONS
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DOI：
10.1006/anbo.1995.1083
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发表时间：
1995-07-01
期刊：
影响因子：
4.2
通讯作者：
PRIMOMILLO, E
中科院分区：
文献类型：
--
作者：
BANULS, J;PRIMOMILLO, E
测定了小柑橘叶片的氯离子和钠离子浓度、水分关系和气体交换参数。例：褐色)和脐橙[C]。(l)在外部培养基中增加NaCl水平生长的克利奥帕特拉柑橘（C. reticulata Blanco）和特罗亚柑橘（C, sinensis x Poncirus trifoliata）砧木上嫁接的接穗。受盐度影响的其他参数如生长和落叶也被记录下来。克利奥帕特拉柑桔的接穗比特罗耶柑桔的接穗积累的Cl-少。嫁接在同一砧木上时，小柑橘接穗的叶片氯离子水平低于脐橙。然而，特罗耶柑橘接穗中的钠浓度低于克利奥帕特拉柑橘。盐处理后脐橙嫁接植株的叶片水势、气孔导度、光合作用和生长均明显低于风帆处理后的小柑橘。然而，砧木的选择对盐诱导的这些参数的变化影响不大。各接穗叶片气孔导度的降低与叶片水势的降低密切相关。光合作用与气孔导度之间存在显著的相关关系。结果表明，盐胁迫下气体交换参数的降低和生长对接穗类型的影响大于叶片中Cl-或Na+浓度的影响。叶片损伤和落叶与叶片Cl-浓度密切相关。(C) 1995年植物学年鉴
Chloride and sodium concentrations, water relations and gas exchange parameters were measured on leaves of Clementine (Citrus Clementine Hort. ex. Tan) and Navel orange [C. sinensis (L.) Osb] scions grafted on Cleopatra mandarin (C. reticulata Blanco) and Troyer citrange (C, sinensis x Poncirus trifoliata) rootstocks grown at increasing levels of NaCl in the external medium. Other parameters affected by salinity such as growth and defoliation were also recorded.Scions on Cleopatra mandarin accumulated less Cl- in their leaves than did scions on Troyer citrange. Also, leaf Cl- levels in Clementine scions were lower than in Navel orange when both were grafted on the same rootstock. However, sodium concentration was lower in scions on Troyer citrange than in Cleopatra mandarin.Leaf water potential, stomatal conductance, photosynthesis and growth were reduced more in grafted plants of salt-treated Navel orange than those of sail-treated Clementine. However, choice of rootstock had little effect on salt-induced changes in these parameters. For each scion, reduction in leaf stomatal conductance was closely correlated with decrease in leaf water potential. Also, a significant correlation between photosynthesis and stomatal conductance was found.The results indicate that reductions in gas exchange parameters and growth at increasing salinity levels depended more on the scion type than on Cl- or Na+ concentration in leaves. Otherwise, leaf injury and defoliation were closely correlated with leaf Cl- concentration. (C) 1995 Annals of Botany Company