Two new cyclic diarylheptanoids juglanin A （1） and juglanin B （2） were isolated from the pericarps of Juglans regia L. Their structures were elucidated by various spectroscopic methods including 2D NMR techniques ...Two new cyclic diarylheptanoids juglanin A （1） and juglanin B （2） were isolated from the pericarps of Juglans regia L. Their structures were elucidated by various spectroscopic methods including 2D NMR techniques （COSY, HMQC, HMBC, NOESY） and HR-ESIMS.展开更多
[Objectives] This study was conducted to explore the fertilization ratio of walnut, so as to provide a basis for rational fertilization of walnut. [Methods] Under the condition of gravelly yellow soil in Chaotian Dist...[Objectives] This study was conducted to explore the fertilization ratio of walnut, so as to provide a basis for rational fertilization of walnut. [Methods] Under the condition of gravelly yellow soil in Chaotian District, Guangyuan City, the orthogonal design of L_9(3~4) was used to test the fertilization ratio of nitrogen, phosphorus and potassium fertilizers. [Results] The effects of nitrogen, phosphorus and potassium fertilizers on walnut yield ranked as phosphate fertilizer>potassium fertilizer>nitrogen fertilizer. The different treatments had great effects on the yield of walnut, and for the land with gravelly yellow soil, the suitable annual fertilization amount of walnut was urea 1 200 g/plant + calcium superphosphate 1 500 g/plant + potassium sulfate 940 g/plant. [Conclusions] This study provides a theoretical basis for rational fertilization of walnut in Sichuan Province.展开更多
Thirteen microsatellite markers were isolated and characterized from Juglans regia L. Successful polymorphism of the 13 primer pairs was observed in various genotypes of J. regia. The number of polymorphic alleles ran...Thirteen microsatellite markers were isolated and characterized from Juglans regia L. Successful polymorphism of the 13 primer pairs was observed in various genotypes of J. regia. The number of polymorphic alleles ranged from 2 to 4 (with an average of 4.35). The polymorphic information content values ranged from 0.47 to 0.88 (with an average of 0.69). TC/AG and GAA/CTT class of repeats were the most abundant di-nucleotide and tri-nucleotide repeats, respectively.展开更多
The six years walnut（Juglans regia）cultivars （grafting plant） and three years seedlings were used as material to study the change of the endogenous hormone contents in roots and buds and the correlation with growt...The six years walnut（Juglans regia）cultivars （grafting plant） and three years seedlings were used as material to study the change of the endogenous hormone contents in roots and buds and the correlation with growth vigor of walnut in the same year. The results indicated that the endogenous hormone contents in bud of different walnut cultivars had insignificant correlation with the growth vigor. The GA3 content in roots of walnut seedlings had positive significant correlation with tree height and its increment. The ABA content in roots of walnut seedlings had strikingly negative relationship with tree height and its increment, and trunk girth. The GA3 content in buds of walnut seedlings had positive correlation significantly with the increment of tree height and the ABA content in buds of walnut seedling had strikingly negative relationship with tree height and its increment. The IAA content in roots of walnut seedlings had bally positive correlation significantly with that in buds.展开更多
文摘Two new cyclic diarylheptanoids juglanin A （1） and juglanin B （2） were isolated from the pericarps of Juglans regia L. Their structures were elucidated by various spectroscopic methods including 2D NMR techniques （COSY, HMQC, HMBC, NOESY） and HR-ESIMS.
基金Supported by Technological Achievements Transformation Fund for Research Institutes in Sichuan Province(14010112)
文摘[Objectives] This study was conducted to explore the fertilization ratio of walnut, so as to provide a basis for rational fertilization of walnut. [Methods] Under the condition of gravelly yellow soil in Chaotian District, Guangyuan City, the orthogonal design of L_9(3~4) was used to test the fertilization ratio of nitrogen, phosphorus and potassium fertilizers. [Results] The effects of nitrogen, phosphorus and potassium fertilizers on walnut yield ranked as phosphate fertilizer>potassium fertilizer>nitrogen fertilizer. The different treatments had great effects on the yield of walnut, and for the land with gravelly yellow soil, the suitable annual fertilization amount of walnut was urea 1 200 g/plant + calcium superphosphate 1 500 g/plant + potassium sulfate 940 g/plant. [Conclusions] This study provides a theoretical basis for rational fertilization of walnut in Sichuan Province.
文摘Thirteen microsatellite markers were isolated and characterized from Juglans regia L. Successful polymorphism of the 13 primer pairs was observed in various genotypes of J. regia. The number of polymorphic alleles ranged from 2 to 4 (with an average of 4.35). The polymorphic information content values ranged from 0.47 to 0.88 (with an average of 0.69). TC/AG and GAA/CTT class of repeats were the most abundant di-nucleotide and tri-nucleotide repeats, respectively.
文摘The six years walnut（Juglans regia）cultivars （grafting plant） and three years seedlings were used as material to study the change of the endogenous hormone contents in roots and buds and the correlation with growth vigor of walnut in the same year. The results indicated that the endogenous hormone contents in bud of different walnut cultivars had insignificant correlation with the growth vigor. The GA3 content in roots of walnut seedlings had positive significant correlation with tree height and its increment. The ABA content in roots of walnut seedlings had strikingly negative relationship with tree height and its increment, and trunk girth. The GA3 content in buds of walnut seedlings had positive correlation significantly with the increment of tree height and the ABA content in buds of walnut seedling had strikingly negative relationship with tree height and its increment. The IAA content in roots of walnut seedlings had bally positive correlation significantly with that in buds.
