Systematic Field Survey and Collection of Maize Germplasm Resources in Guangxi
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the Third National Survey and Collection Action on Crop Gemplasm Resources(111721301354052035) ;Collection,Identification and Conservation of Maize Germplasm Resources in Guangxi(Guangxi Innovation-driven Development Project)

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    Abstract:

    From November of 2015 to Jul of 2018, as a sub-project of the Third National Survey and Collection Action on Crop Gemplasm Resources, we conducted a systematic investigation on the status quo and utilization of crop germplasm resources in Guangxi province, where 190 villages in 71 towns of 52 counties were surveyed. Through visiting and field surveying, a total of 308 maize (Zea mays L.) landraces were collected, among which the phenotypic variation of 270 maize landraces were identified and evaluated. Based on the collection sites, a number of landraces were found in North and Northwest of Guangxi, while fewer accessions were collected from the East and Southeast areas. Particularly, many of accessions were found from counties including Lingyun, Leye, Tianlin, Fengshang and Donglan.The results of vertical distribution showed that the distribution of maize landraces were most concentrated in the middle-high altitude(400~800m) mountain area, which accounted for 39.6% of the total collection.Preliminary identification results of agronomic characters showed that most of the collected maize accessions were waxy corn and white color. Notably, six maize landraces with elite traits were identified, including Mobai maize, Jiu jie huang, Pearl waxy corn, Xincheng white waxy corn, Longan popcorn and Tiandeng popcorn, which were excellent in stress ,diseases and insects resistance and had excellent performances in characters. Those special maize landraces would have a strong prospect for varieties utilization in quality, stress resistance, adaptability and nutrient efficient utilization.In this study,the classification and utilization value of the collected maize were evaluated.Local situation,growth and decline conditions of the maize landraces in the investigated area were analyzed.Besides,the protection and utilization of maize landraces in Guangxi were discussed.It provides a reference for the exploitation and innovative utilization of maize germplasm resources in Guangxi.

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History
  • Received:August 28,2018
  • Revised:March 14,2019
  • Adopted:October 08,2018
  • Online: May 13,2019
  • Published:
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