Research on the Hybridization and Innovation of Baojing Huangjincha 1
Author:
Affiliation:

Tea Research Institute, Hunan Academy of Agriculture Sciences/National Center for Tea Improvement, Hunan Branch/Hunan Observation and Experiment Station of Tea Plant and Tea Processing, Ministry of Agriculture

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    In order to produce the elite germplasm resource for tea breeding, we deployed the artificial hybridization approach to generate the F1 hybrids by crossing six elite tea varieties including Fuding Dabaicha (mother) with another variety Baojing Huangjincha 1, which showed a specific phenotype "golden rhyme" but weak adaptation ability. We found that Baojing Huangjincha 1 pollen exhibited a strong living force whose fresh pollen life force reached to 94.22% by taking researching on Baojing Huangjincha 1 pollen life force, different hybrid combination strong rate, hybrid F1 generation seedling rate, F1 generation excellent single plant selection rate, etc.. Under room temperature, 4℃ and -20℃ conditions, its pollen was able to survive up to 7d, 30d and 40d, respectively. The seed setting rates of six hybrid combinations were variable from 15.25% (Bixiangzao) to 31.32% (Fuding Dabaicha) with the average of 21.88%, while the seedling rates were arranged from 50.77% (Bxiangzao) to 66.65% (Tieguanyin) with a mean value of 59.62%. No significant difference was observed in seed setting rate and seedling rate among different treatments (combinations and years). By taking use of three rounds of selecting excellent strains and identifying asexual reproduction ability, a total of 60 strains were finally accepted with a selection rate of 2.35%. The rate of elite hybrids was much higher than that of naturally-occurring hybridization offspring (0.04%). Furthermore, we conducted a comprehensive evaluation of biochemical composition, yield and quality related traits in selected hybrids. Three new strains, which were subjected for the regional test, showed the growth potential and excellent sensory quality (especially with aroma prominent), much better than the father Baojing Huangjincha 1.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:September 16,2019
  • Revised:November 06,2019
  • Adopted:December 12,2019
  • Online: May 18,2020
  • Published:
You are the th visitor 京ICP备09069690号-23
® 2024 All Rights Reserved
Supported by:Beijing E-Tiller Technology Development Co., Ltd.