Variations in Nutrition Compositions and Morphology Characteristics in Different Hybrid Combination of Korean Pine(Pinus koraiensis)

doi:10.7525/j.issn.1673-5102.2017.05.009

Abstract

Abstract: With 12 seed traits of 44 different hybridized combination, we studied the variation of seed traits of Korean pine hybrids and breed hybrid combinations. The coefficient of variation of length of seed was the lowest(10.65%), and the coefficient of variation of weight of seed was the highest(36.35%) in seed morphological traits of Pinus koraiensis. Fat content variation coefficient was the lowest(8.07%) among the main nutrition compositions, while polysaccharides contents was the highest(30.89%). The correlation analysis showed that the length positively correlated with kernel weight and 100-grain weight, and thus selecting large length of seeds can improve the kernel weight and 100 grain weight. These nutritional components and morphological traits displayed significant differences among 44 different hybridized combinations. Three fine crosses were selected from 44 different hybridized combinations by principal component analysis. The realistic gain of their kernel yield, seed weight, 100-grain weight, kernel weight and fat content were 7.52%, 27.89%, 13.14%, 9.85% and 10.08%, respectively. The heterosis of seed weight, seed weight and kernel weight of 011×153 was the highest, which were 34.59%, 95.75% and 43.23%, respectively. The 100-grain weight and the fat content of 156×161 were the largest, which were 24.58% and 24.87%, respectively. The results of heterosis analysis showed that the hybrids with 011 as female parent had higher heterosis, while the hybrids with 174 as male parent had higher heterosis. Korean pine cross breeding could induce abundant variations, and the selection of excellent hybrid combinations could provide a choice for the construction of nut-production forest.

Key words: Korean pine, hybrid combination, morphology characteristics, nutrition compositions, variation analysis

CLC Number:

S722.3

MO Chi, ZHANG Hai-Xiao, ZHANG Lei, HOU Dan, ZHANG Han-Guo. Variations in Nutrition Compositions and Morphology Characteristics in Different Hybrid Combination of Korean Pine(Pinus koraiensis)[J]. Bulletin of Botanical Research, 2017, 37(5): 700-708.

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