| 王有科,席万鹏,郁松林,李志博.引种扁桃抗寒力及冻害成因分析[J].干旱地区农业研究,2006,(5):126~129 |
| 引种扁桃抗寒力及冻害成因分析 |
| Analysis on cold resistance ability of almond and causes of chilling injury |
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| DOI：10.7606/j.issn.1000-7601.2006.05.27 |
| 中文关键词: 扁桃 抗寒力 冻害 成因 |
| 英文关键词:almond ability of cold resistance chilling injury cause |
| 基金项目:甘肃省林业厅项目(9950661) |
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| 摘要点击次数: 92 |
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| 中文摘要: |
| 通过对两个引种扁桃扶兹(Fritz)和那普瑞尔(Nonpareil)1年生枝条的半致死温度(LT50)拟合、越冬调查、休眠期的含水率及其解刨结构的分析,对扁桃的抗寒力进行了研究,结果表明:Fritz、Nonpareil及CK1年生休眠枝的半致死温度(LT50)分别为-24.88℃、-20.56℃和-17.15℃;冻害指数分别为10%、45%和87%,抗冻害评级依次为高抗、中抗、易抽。因此,两供试品种都有较强的抗寒能力,而且均强于CK,Fritz的抗寒能力最强。造成1年生枝条冻害的主要原因是生长与休眠临界期枝条的大量失水;其形态解剖学原因是表皮薄,皮层薄壁细胞排列疏松和韧皮薄壁细胞不发达。 |
| 英文摘要: |
| The ability of cold resistance of almond was analyzed by the formulation of LT50, the investigation of over-wintering, the measurement of water content in dormant period and the analysis of anatomical structure in the annual branches of two introduced varieties (Fritz and Nonpareil) .The results showed: the LT50 of Fritz, Nonpareil and CK was-24.88℃, -20.56℃ and-17.15℃, respectively;the index of chilling injury of these varieties was 10%, 45% and 87%, respectively;and the classification of cold resistance was in turn high resisting, moderate resisting and easily shoot-shriveling.So the cold resistance ability of both the tested species was better than that of CK, in which the cold resistance ability of Fritz was the strongest.The main cause of chilling injury in the annual branches was the losing of water at critical period;the reasons of anatomical structure was the thick epidermis, the loose arranging of parenchyma in cortex, and the undeveloped parenchyma in best. |
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