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2021 Vol.66, Issue 3 Preview Page

Original Research Article

Correlation of Zoysia Grass (Zoysia. spp) Survival, Reproduction, and Floret Appearance Rates to Aid in Development of New Hybrid Zoysia Grass Cultivars

잔디 교잡 품종 개발을 위한 잔디 생존률, 재생산률 및 꽃대 출현률과의 상관관계

Gyung Deok Han1†
,
Ji Hyeon Jung2†
,
Yong Suk Chung3*
한 경덕1†
,
정 지현2†
,
정 용석3*
1Post Doctor, Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Korea
2Graduate Student, Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Korea
3Assistant Professor, Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Korea
1제주대학교 식물자원환경학과 박사 후 연구원
2제주대학교 식물자원환경학과 대학원생
3제주대학교 식물자원환경학과 조교수
*Corresponding Author
†These authors equally contributed.
1 September 2021. pp. 265-269
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Abstract

This study was conducted to provide primary data through analysis of zoysia grass genetic resources to develop grass cultivars with beneficial novel properties. Zoysia grass (Zoysia. spp) is native to Korea, and is mainly propagated through stolons. However, since seed coat treatment technology was developed, the breeding of sexually reproductive grass variants has become possible, necessitating characterization of the floret appearance rate in the secured zoysia grass genetic resource before developing sexually reproductive cultivars. In this experiment, 549 grass lines were examined, revealing that florets appear in only 43 lines (7.81%). Survival rates after transplantation, and stolon generation rates displayed a significant positive correlation (Rho = 0.44). Survival rates after transfer, and rates of stolon production displayed very low correlations with floret appearance (Rho = -0.11 and Rho = -0.06). No significant results were obtained in 43 lines that displayed >20% floret appearance. To breed sexually reproductive grass variants, it is thus necessary to secure more genetic resources, considering the low rate of floret appearance. Finding traits that predict floret appearance at an early stage is also required.

Keywords
breeding
flower
grass
phenotype
plant physiology
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 66
  • No :3
  • Pages :265-269
  • Received Date : 2021-08-12
  • Revised Date : 2021-08-23
  • Accepted Date : 2021-08-24
  • DOI :https://doi.org/10.7740/kjcs.2021.66.3.265
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