Phenological and pomological characterization of Persian walnut to select promising trees
Phenological and pomological characterization of Persian walnut to select promising trees
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DOI：
10.1007/s10681-015-1429-9
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发表时间：
2015-09-01
期刊：
影响因子：
1.9
通讯作者：
Esmaeili, Alireza
中科院分区：
文献类型：
--
作者：
Khadivi-Khub, Abdollah;Ebrahimi, Aziz;Esmaeili, Alireza
伊朗有重要的波斯核桃（Juglans regia L.）树木，其中大部分是幼苗生长。由于生物材料的广泛变异性，异花授粉和有性繁殖的结果主要通过自然传播或人为传播，伊朗Neiriz地区核桃种质具有丰富的表型多样性。因此，研究了该地区540份核桃品种的形态多样性，并鉴定出具有优良果实性状的树木。测得的物候学和果树学特征有很高的变异性。方差分析表明，供试材料间大部分性状存在显著差异。变异系数在9.02 ~ 104.20%之间.结果表明，供试材料的坚果重为3.60- 20.28g，仁重为1.32 ~ 10 g，出仁率为17.44- 83.88%。不同表型性状间存在正相关和负相关。前3个因子解释了供试材料间总变异的34.95%.通过双标图和聚类分析，将所研究的材料聚为几类。573、506、374、399、527、101、150、95、91、472号为较好的品种，其壳薄、粒重、粒轻、侧果多、开花晚。最有希望的树木将用于保护研究，育种和栽培。此外，观察到的结构的变化的基础上，它的结论是，在研究材料的形态变化的幅度是高的，植物育种计划的结果的影响进行了讨论。
Iran has significant Persian walnut (Juglans regia L.) trees, most of which are seedling-grown. Due to the extensive variability of biological material, the result of cross-pollination and generative propagation prevailed about by natural dissemination or anthropogenic, Neiriz region in Iran has rich phenotypic diversity in walnut germplasm. Thus, morphological diversity of 540 walnut accessions from this region was studied and trees with promising fruits characteristics were identified. There was high variability for the measured phenological and pomological characteristics. The variance analysis detected significant differences among the studied accessions for most of characters. The coefficient of variation varied from 9.02 (nut diameter) to 104.20 % (first female flowering date). Among the accessions studied, the ranges of 3.60-20.28 g for nut weight, 1.32-10 g for kernel weight and 17.44-83.88 % for kernel percentage were observed. Positive and negative correlations were detected among different phenotypic traits. The first three factors explained 34.95 % of the total variability among the studied accessions. The accessions studied were clustered into several groups by a bi-plot and cluster analysis. The best accessions were no. 573, 506, 374, 399, 527, 101, 150, 95, 91 and 472, which had thinner shell, heavier kernel, light kernel, more lateral fruitfulness and late flowering. The most promising trees will be used to the benefit of conservation research, breeding and cultivation. Moreover, based on the observed structures of variation, it is concluded that the magnitude of morphological variation in the material studied is high and the implications of the results for plant breeding programs are discussed.