摘要
抗寒育种是核桃品种选育中的一个重要问题。本文对引自意大利罗马果树研究所的１５个核桃品种中的２９个品系的研究显示：品种间的单叶重差异较大，最重者是Ｆｒａｎｑｕｅｔｅ和Ｓｅｒｅｎｔｏ。对叶片细胞结构紧密度（ＣＴＲ）观察表明：品种间存在极显著差异。最高者为Ｃｏｒｎｅ品种的三个品系，它们的ＣＴＲ＞５０％；Ｆｒａｎｑｕｅｔｅ则居中（ＣＴＲ＝４０％～５０％）；Ｆｒａｎｑｕｅｔｅ则居中（ＣＴＲ＝４０％～５０％）；而Ｔｅｈａｒｍａ为最低（ＣＴＲ＜４０％）。叶片细胞膜透性（ＣＭＰ）观察表明：抗寒性较强的品种中，ＣＭＰ值差别较小；反之，则较大。数年的观察发现：细胞膜透性与品种抗寒性呈显著正相关，而细胞结构紧密度则与品种抗寒性呈显著负相关。这两项指标可以作为核桃品种抗寒性鉴定的预选指标。
Selecting the cold resistence plants is an important problem in the breeding of walnut. The result of a study of about 29 strains of 15 varieties of walnut that were introduced from Roma Fruit Institute of Italy showed: the weight of one singel leaf was different among varieties, the highest weight varieties were Franquette and Serrento. There was a significant difference in the CTR among the different varieties' leafs:the highest were the 3 trains of Corne,their CTR>50%; that of strains of the Franquette were of medium (CTR=40%～50%) and the Teharma were the lowermost (CTR<40%). The varience of the cell membrane permeability (CMP) changes less inter the varieties which had a forciable cold resistence than that the feeble cold resistence varieties. These two terms may be taken as two pre selecting indications for the identification of variety on cold resistence of walnut strains.
出处
《植物学通报》
CSCD
1998年第A00期111-113,共3页
Chinese Bulletin of Botany
基金
山西省青年基金
