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- W2347989687 abstract "The pollen vitality and stigma receptivity of Rhododendron obtusum(Lindl.) Planch. cv. Liuqiuhong, R. obtusum cv.Dayuanyangjin, R. obtusum cv. Xiaoqinglian and R. obtusum cv. Yanzhimi was studied by in vitro culture and benzidine-H2O2 testing method. The results showed that the suitable liquid culture medium for detecting the pollen germination of these Rhododendron L. was 300 mg / L Ca(NO3)2·4H2O + 200 mg / L Mg SO4·7H2O + 100 mg / L KNO3+100 g / L sugar + 100 mg / L H3BO3. The germinating capability order was R. obtusum cv. DayuanyangjinR. obtusum cv. Yanzhimi R. obtusum cv. Liuqiuhong R. obtusum cv. Xiaoqinglian. Low temperature was helpful to prolong the pollen vitality. However, there was no significant difference between 4 ℃ and-18 ℃ treatment for Rhododendron pollen preservation. After 30 days storage, the pollen vitality of R. obtusum cv. Liuqiuhong decrease to below 5% and might not be applied as male parent for pollination. Meanwhile, the pollen vitality maintained at a certain level in R. obtusum cv. Dayuanyangjin and R. obtusum cv. Yanzhimi after 30 days storage with low temperature. Thus the above two cultivars might be good male parent for cross breeding. The stigma of R. obtusum cv. Liuqiuhong had the strongest receptivity in 6 to 8 days after blossoming, whereas the other three cultivars had the strongest receptivity in 5to 9 days after blossoming, when the stigma secreted large amount of sticky fluid, thus was the best period for pollination." @default.
- W2347989687 created "2016-06-24" @default.
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- W2347989687 date "2015-01-01" @default.
- W2347989687 modified "2023-09-25" @default.
- W2347989687 title "Study on Pollen Vitality and Stigma Receptivity of Four Rhododendron cultivars" @default.
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