不同环境下甜叶菊(Stevia rebaudiana)克隆干叶生物量的稳定性

Niketa Yadav, Satbeer Singh, R. Chauhan, Ashok Kumar, Sanatsujat Singh
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引用次数: 0

摘要

为了确定稳定的高产甜叶菊(Stevia rebaudiana)基因型,在四个不同的生长环境中进行了多环境试验。试验采用随机区组设计,在 2019 年和 2020 年期间进行了三次重复。综合方差分析显示,所有研究性状的基因型、环境和 G×E 交互作用均存在显著差异。所有性状的最高平均表现表明,霍希尔布尔具有种植甜叶菊的有利条件,CSIR-IHBT-ST-1801 和 CSIR-IHBT-ST-G12 在所有地点中表现最佳。基于 Eberhart 和 Russell 模型的稳定性参数表明,CSIR-IHBT-ST-1801 在干叶生物量方面表现稳定,GGE 双图分析也进一步证实了这一点。正如皮尔逊相关系数显示的叶片生物量贡献率为正值所表明的那样,主芽是干叶生物量的主要贡献者。因此,可将主芽作为提高干叶生物量的选择标准。CSIR-IHBT-ST-1801 可作为目标地区的稳定高产品种,也可用于进一步的甜叶菊育种计划。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dry Leaf Biomass Stability of Stevia (Stevia rebaudiana) Clones over Different Environments
In order to identify stable high-yielding stevia (Stevia rebaudiana) genotypes, a multi-environment testing was conducted over four different growing environments. The experiments were conducted in a randomized block design, with three replications during 2019 and 2020. The combined analysis of variance showed significant variation for genotype, environment, and G×E interaction for all studied traits. The highest mean performance for all the traits revealed that Hoshiarpur has favorable conditions for stevia cultivation, and CSIR-IHBT-ST-1801 followed by CSIR-IHBT-ST-G12 were the best performers over all the locations. The Eberhart and Russell model-based stability parameters demonstrated that CSIR-IHBT-ST-1801 was a stable performer for dry leaf biomass, and that was also further confirmed by GGE biplot analysis. Primary shoots were major contributors to the dry leaf biomass, as indicated by the substantial positive leaf biomass contribution shown by Pearson's correlation coefficients. As a result, primary shoots might be utilized as selection criteria to increase the dry leaf biomass. The CSIR-IHBT-ST-1801 could be used as a stable high-yielding variety for the targeted regions and also, can be used for further stevia breeding programs.
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