Publications by authors named "Qing-Long Chu"
Two new sesquiterpenes from the aerial parts of Schizonepeta tenuifolia.
J Asian Nat Prod Res
February 2017
Two new sesquiterpenes named petafolias A-B were isolated from the aerial parts of Schizonepeta tenuifolia. Their structures were elucidated by various spectroscopic techniques (UV, IR, MS, CD, 1D, and 2D NMR).
View Article and Find Full Text PDF[Isolation and identification of pathogen of seedling blight of Platycodon grandiflorum].
Zhongguo Zhong Yao Za Zhi
May 2013
Objective: To isolate and identify pathogen of the seedling blight occurred in Platycodon grandiflorum.
Method: The morphological observation, rDNA ITS sequence analysis, and Koch's postulates were used to identify the isolates of the causal agent.
Result: The isolates of the causal agent was Rhizoctonia solani.
Objective: To determine the possibility of heterosis utilization by male sterility in Platycodon grandiflorum.
Methods: The analysis of variance, heterosis over standard and correlation on 12 agronomic in 18 crossing combinations were carried out.
Results: Except the dry weight of upground part of plant, the length of main root and the diameter of middle part of the main root, all other agricultural traits were different significantly among the 18 F1 combinations.
Objective: Breeding the good varieties characters of Platycodon grandiflorum.
Methods: 20 combination, derived from 2 x 10 incomplete diallel cross with 2 male sterile lines and 10 four-generation inbred lines, analysis the 13 agronomic characters.
Results: The agronomic characters of F1 has obvious heterosis.
[Study on the stigma/pollen vigor and self-compatibility of Platycodon grandiflorum].
Zhongguo Zhong Yao Za Zhi
March 2006
Article Synopsis
- The study aimed to gather essential data for breeding and cultivation of Platycodon grandiflorum, focusing on pollination and pollen viability.
- Research involved field investigations and bagging techniques for pollination, using TTC solution to assess pollen vigor, which started at 81.4% and dropped to 27.6% over three days.
- Results indicated that optimal pollination occurs 4-6 days post-petal opening, with low self-pollination rates due to mismatched maturation of reproductive parts, while hand pollination improved compatibility rates significantly.
Objective: To investigate the factors influencing the seed germination of Bupleurum chinense and B. falcatum.
Method: The seeds of different maturity, and the seeds whose coat were removed or nicked before dipping in water, were germinated in a light growth chamber.