Selecting the optimum soaking time of walnut seeds based on principal component analysis

doi:10.14088/j.cnki.issn0439-8114.2019.15.016

Abstract

Abstract: In order to further optimize the seed soaking time of walnut （Juglans regia L.） in the mountain area, principal component analysis was carried out on seedlings germination rate, tree body characteristics（plant height, stem, root length, root length, leaf area, chlorophyll content） and leaf nutrients （N, P, K, Ca, Mg and other mineral elements） of walnut seedlings in the condition of sowing in different soaking time. According to the comprehensive score of principal component contribution rate to calculate the different soaking time, the most suitable soaking time were analyzed and screened. The results showed that the principal component analysis were suitable for walnut seed soaking time screening, and when the soaking time was 5 days, the total score was the highest, and the lowest score was in 1 day seed soaking.

Key words: principal component analysis, walnut（Juglans regia L.）, sowing, seed soaking time

CLC Number:

S664.1

LIU Kai, WANG Shuang, GAO Yi, WANG Hong-xia, ZHANG Zhi-hua. Selecting the optimum soaking time of walnut seeds based on principal component analysis[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(15): 72-76.

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