|Table of Contents|

Establishment of Low Potassium Tolerance Germplasm Screening and Evaluation System of Pepper Seedling

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年4
Page:
24-30
Research Field:
Publishing date:

Info

Title:
Establishment of Low Potassium Tolerance Germplasm Screening and Evaluation System of Pepper Seedling
Author(s):
GUO Jiaxue; LONG Huijun; HUANG Yu; OU Lijun
(College of Horticulture，Hunan Agricultural University/Key Laboratory for Vegetable Biology of Hunan Province，Changsha，Hunan 410128)
Keywords:
pepper; low potassium tolerance; germplasm screening; comprehensive evaluation
PACS:
S 641.3
DOI:
10.11937/bfyy.20243603
Abstract:
Taking nine germplasm of capsicum which showed obvious difference in plant performance in potassium-poor soil as the test materials，the differences in various agronomic traits of pepper germplasm under normal and low potassium stress conditions using a hydroponic method were studied，in order to provide reference for breeding of low potassium tolerant pepper varieties.The results showed that under the condition of low potassium，the plant growth was hindered，the stem was thin and the plant was short.The phenotypes of different germplasm were different under low potassium stress.B362 had relatively high plant height and biomass，while B323 showed stunted growth and stunted plant，and the difference was obvious at 0.02 mmol·L-1 potassium concentration.Variance，coefficient of variation，correlation coefficient，principal component and membership function were used to analyze the multiple index variables，and the aboveground fresh weight，underground dry weight，plant height and root-shoot ratio could be used as evaluation indexes of low potassium tolerance.In summary,0.02 mmol·L-1 was the appropriate concentration for screening low potassium tolerant germplasm of pepper.B362 could be used as the parent of low potassium tolerance varieties.The evaluation criteria of low potassium tolerance in pepper seedling were constructed with aboveground fresh weight，underground dry weight，plant height and root-shoot ratio.

References:

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Last Update: 2025-02-28