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文章介绍了辽宁7号早实核桃的品种特性,在多年栽培管理的基础上提出该品种的栽培管理技术和病害防治方法,以期为核桃栽植者提供参考。 相似文献
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'Liaoning 2' is a dwarf walnut variety bred by Chinese scientists through artificial hybridization, but little is known about its dwarfing mechanism. In this study, the dwarfing mechanism of 'Liaoning 2' is discussed through the comparison of biological characteristics, genomics and the expression of growth-related gene JrGAI,with a growth normally, closely related(half-sib families) variety of 'Liaoning 1' as control. By observing the phenology and tree phenotypes, it was found that there was no significant difference in phenological phase between 'Liaoning 1' and 'Liaoning 2', but 'Liaoning 2' was obviously dwarf, the height, crown and trunk diameter were smaller, the average length of internode reduced significantly, but there was no significant difference in the number of development branch internode. The dwarf phenotype of 'Liaoning 2' is mainly caused by inter-shortening. The qRT-PCR technique was performed to analyze the expression of GA negative regulation gene JrGAI and the results showed that during the shoot development, the expression of JrGAI gene exhibited decreasing expression in the shoot rapid growing period in both varieties and the decline in 'Liaoning 1' was remarkably reduced. The SSR analysis with 25 pairs of primers showed that SSR loci of two varieties were different, especially the homozygosity of 'Liaoning 2' SSR loci was higher. It is concluded that different expressions of JrGAI gene and homozygosity of SSR loci could be important internal reasons of dwarf phenotype of 'Liaoning 2'. 相似文献
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文章主要阐述新选育的核桃优良品种-'水口1号'的室内嫁接繁殖技术要点;同时提出了包括气候因子要求、土壤、地势、栽培株行距、授粉树配置、整形修剪、土肥水管理、幼树防寒、病虫害防治及采收与采收后管理等栽培管理技术. 相似文献
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早实核桃新品种引种试验研究 总被引:1,自引:1,他引:1
采用大树多头高接的引种方法,对引进35个早实核桃新品种(或优系)的适应性、生长结实特性和坚果品质进行了连续观察和测定,并依据国家标准GB7907—87(核桃丰产与坚果品质)中有关核桃新品种的经济指标和适应性,采用独立淘汰方法,分层进行了评定,初步选出适合于山西省发展12个品种,这些品种的主要经济性状均达到或超过美国2个最新专利品种。 相似文献
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以优质核桃当年生充分木质化枝条为接穗,进行夏季嫩枝嫁接。对劣质核桃树春季利用枝接法高接换优嫁接不成功的可用此法进行补接,弥补了春季枝接不成活而因抽生枝条生长期短,枝条瘦弱,无法用芽接补接的不足,使劣质核桃树改造同年内完成,促进核桃树早挂果、早丰产,效果明显。 相似文献
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核桃是世界四大坚果之一,核桃仁富含脂肪、蛋白质、多种维生素和微量元素。近年来,由于国家农业产业结构调整,退耕还林政策的实施,以及核果市场行情好,果实耐贮耐运,易加工等优点,果农对发展核桃呈现极高的热情,核桃良种苗木出现不应求的局面。文章着重阐述了砧木培育、良种接穗的采集和贮藏、温室及电热温床设施的准备、嫁接和 接后管理环节等一系列技术措施。 相似文献
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核桃主干病虫害主要有云斑天牛、核桃蚧壳虫、溃疡病、膏药病等;叶部的虫害有核桃叶甲、核桃举肢蛾、刺蛾、金龟子等。无公害防治应采取的防治措施主要有:营林措施、物理措施、化学措施、无人机飞防防治,通过推广生物防治、物理防治和先进施药器械等措施,逐步取消化学农药使用。在核桃无公害示范区无人机飞防主要是防治核桃举肢蛾、核桃扁叶甲、刺蛾、核桃黑斑病、核桃炭疽病等主要病虫害,使好果率提高30%以上,产量逐年上升。 相似文献
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辽西地区不同品种核桃抗寒性评价 总被引:1,自引:0,他引:1
于2014—2016年,在建昌县对处于盛果期的早实和晚实核桃进行抗寒性评价,以筛选出抗性较强的品种。结果表明:以雌、雄花芽和1年生枝的抗寒性为主导因子,各品种间抗寒性表现为礼品2号礼品1号辽宁7号辽宁5号辽宁6号辽宁4号辽宁10号辽宁3号辽宁1号。 相似文献
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