柑桔种质的耐盐性鉴定

IDENTIFICATION OF SALT-TOLERANCE OF CITRUS GERMPLASM

研究了不同浓度的盐处理对各柑桔种类、品种的影响,明确了枳(Poncirus trifoliataRaf.)、宜昌橙(Citrus ichangensis Swingle)、香橙(C.junos(Sieb)Tanaka)、枸椽(C.medica L.)、柠檬(C.limon(L)Burm.f.)、枳橙(P.trifol.x C.sinen.)等种类不耐盐;酸橙(C.aurantium L.)、甜橙(C.sinensis Osb.)比较耐盐;宽皮柑桔(C.reticulata Blanco)的耐盐性则有广泛的分离现象。鉴定结果,朱桔类(C.erythrosa Hort.ex Tanaka)的安江红桔、迟红、草桔、朱红桔等品种及酸橙类的蚌柑、意大利酸橙、摩洛哥酸橙和红皮山桔、年桔(C.reticulata Blanco)等有较高的耐盐性。为耐盐砧木的筛选提供了依据。

The seedlings of 3 genera, 15 species and 91 varieties of citrus fruits -were treated with 100, 50, 25, 0 mM NaCl solutions for 70 days. The effect of different salinity on various citrus species and varieties was studied.The result shows that the Trifoliate orange ( P.trifoliata ) , Ichange papeda ( C .ichangensis ) , Xiangcheng ( C .junos ) , Citron ( C ,me-dica ) , Lemon ( C.limon ), and Citrange ( P.trifoliata × C .sinensis ) etc. are sensitive while the sour orange ( C.aurantium ) and the sweet orange ( C.sinensis ) are tolerant to salt. The tolerance of mandarins ( C .reti-culafa)showed a great diviation.Some cultivars of zhuju ( C.erythrosa ) , such as Anjianghongju, Chihong, Caoju, Zhuhongju, etc., some sour oranges, e.g. Banggan,Italian and Morocco sour orange and some mandarins, e.g. Nianju and hongpishanju, have been identified as having high salt-tolerance.The results of this study could be helpful to screening of salt tolerant citrus rootstocks.