Breeding for drought tolerance in perennial ryegrass (Lolium perenne L.) and tall fescue (Lolium arundinaceum [Schreb.] Darbysh.) by exploring genotype by environment by management interactions

Grassland Research Pub Date : 2023-05-01 DOI:10.1002/glr2.12045

Claudio C. Fernandes Filho, Mario H. Murad Leite Andrade, Jose A. Rodrigues Nunes, Joseph Wipff, Debra L. Hignight, Esteban F. Rios, Kevin Kenworthy, Kenneth Hignight

{"title":"Breeding for drought tolerance in perennial ryegrass (Lolium perenne L.) and tall fescue (Lolium arundinaceum [Schreb.] Darbysh.) by exploring genotype by environment by management interactions","authors":"Claudio C. Fernandes Filho, Mario H. Murad Leite Andrade, Jose A. Rodrigues Nunes, Joseph Wipff, Debra L. Hignight, Esteban F. Rios, Kevin Kenworthy, Kenneth Hignight","doi":"10.1002/glr2.12045","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Drought-tolerant turfgrass cultivars are becoming more important each year as landscape irrigation practices are becoming more restrictive.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>In this study, we quantified the level of drought tolerance (DT) in perennial ryegrass and tall fescue genotypes across years under different mowing (MH) and fertility (FL) rates. A total of 48 ryegrass and 38 tall fescue genotypes were planted in 2011 at NexGen, Albany, OR. The trial was divided into three subtrials: (i) DT; (ii) MH and DT; and (iii) FL and DT.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>The results showed that there was significant genetic variance for most of the traits in both species. The genotype × year interaction was predominantly simple, indicating small changes in genotype ranking for both species. Lower MH improved DT in perennial ryegrass, whereas higher MH resulted in greater DT in tall fescue. For both species, higher MH improved the population mean for turf quality. Higher FL inputs led to higher turf quality for both species, but it did not affect the DT response.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Using a selection index, six genotypes for perennial ryegrass and four for tall fescue were selected.</p>\n </section>\n </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"2 1","pages":"22-36"},"PeriodicalIF":0.0000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.12045","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Grassland Research","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/glr2.12045","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Background

Drought-tolerant turfgrass cultivars are becoming more important each year as landscape irrigation practices are becoming more restrictive.

Methods

In this study, we quantified the level of drought tolerance (DT) in perennial ryegrass and tall fescue genotypes across years under different mowing (MH) and fertility (FL) rates. A total of 48 ryegrass and 38 tall fescue genotypes were planted in 2011 at NexGen, Albany, OR. The trial was divided into three subtrials: (i) DT; (ii) MH and DT; and (iii) FL and DT.

Results

The results showed that there was significant genetic variance for most of the traits in both species. The genotype × year interaction was predominantly simple, indicating small changes in genotype ranking for both species. Lower MH improved DT in perennial ryegrass, whereas higher MH resulted in greater DT in tall fescue. For both species, higher MH improved the population mean for turf quality. Higher FL inputs led to higher turf quality for both species, but it did not affect the DT response.

Conclusions

Using a selection index, six genotypes for perennial ryegrass and four for tall fescue were selected.

Abstract Image

查看原文本刊更多论文

多年生黑麦草（Lolium perenne L.）和高羊茅（Lonium arundinaceum[Schreb.]Darbysh.）的抗旱性育种

背景随着景观灌溉实践的限制性越来越强，耐旱草坪草品种每年都变得越来越重要。方法在本研究中，我们量化了多年生黑麦草和高羊茅基因型在不同割草率（MH）和生育率（FL）下的耐旱性（DT）水平。2011年，俄勒冈州奥尔巴尼NexGen共种植了48种黑麦草和38种高羊茅基因型。试验分为三个子项：（i）DT；（ii）MH和DT；以及（iii）FL和DT。结果两个品种的大部分性状均存在显著的遗传变异。基因型 × 年份交互作用主要是简单的，表明两个物种的基因型排名变化较小。较低的MH改善了多年生黑麦草的DT，而较高的MH导致高羊茅的DT更大。对于这两个物种，较高的MH改善了草坪质量的种群平均值。较高的FL输入导致两个物种的草皮质量较高，但不会影响DT反应。结论采用选择指数法筛选出6个多年生黑麦草基因型和4个高羊茅基因型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Grassland Research

CiteScore

0.70

自引率

0.00%

发文量