研究了5个柑桔细胞杂种的抗寒性,其结果是伏令夏橙+宜昌橙(C.sinensis Osb.cv.Valencia + C.ichangensis Swingle)抗- 11℃、伏令夏橙+‘key’来檬(C.sinensis Osb.cv.Valencia + C.aurantifolia cv.Key lime)抗- 7.59℃、伏令夏橙+宁波金柑(C.sinensis Osb.cv.Valencia + Fortunella crassifolia Swingle cv.Meiwa)抗- 9.54℃、哈姆林甜橙+粗柠檬(C.sinensis Osb.cv.Hamlin + C.jamhiri L.)抗- 7.1℃,哈姆林甜橙+飞龙枳(Citrus sinensis Osb.cv.Hamlin + Poncirus trifoliataRaf.cv.Flying Dragon)抗- 12.89℃、并且证明了5个体细胞杂种的抗寒性均介于两亲本之间。其中哈姆林甜橙+飞龙枳杂种、伏令夏橙+宜昌橙杂种的抗寒性均高于其它几个组合。还证明了柑桔体细胞杂种的抗寒能力几乎不受栽培管理水平的影响。
Freezing resistance of 5 Citrus somatic hybrids were studied.The results showed that the freezing resistunce of Valencia sweet orange (C.sinensis Osb.cv.Valencia)+Ichang papeda (C.ichangensis Swingle) was -11℃,Valencia sweet orange+ ‘Key’ lime (C.aurantifolia Key lime) was -7.59℃,Valencia sweet orange+ Meiwa Kumquat (Fortunella Crassifolia Swingle cv.Meiwa) was -9.54℃,Hamlin sweet orange (Citrus sinensis Osb.cv.Hamlin)+ Rough lemon (C.jamhiri L.) was -7.1℃,Hamlin sweet orange + Flying Dragon trifoliate orange (Pocirus trifoliata Raf.cv.Flying Dragon) was -12 89℃.And it was proved that freezing resistance of 5 citrus somatic hybrids was all between parents.Among them Hamlin sweet orange+Flying Dragon trifoliate orange and Valencia sweet orange+Ichang papeda had higher resistance to low temperatures than others.The test was also proved that freezing resistance of citrus somatic hybrids was hardly influenced by cultivation managements.
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