Time of day affects the tolerance distinction of sugarcane varieties to water deficiency through physiological traits

IF 1 4区生物学 Q3 BIOLOGY Biological Rhythm Research Pub Date : 2023-07-31 DOI:10.1080/09291016.2023.2240273

Marcelo de Almeida Silva, Marcela Cristina Brunelli-Nascentes, Hariane Luiz Santos, Carolina Ruv Lemes Gonçalves Mendes, Fernanda Pacheco de Almeida Prado Bortolheiro, Renan Fonseca Nascentes, João Domingos Rodrigues

{"title":"Time of day affects the tolerance distinction of sugarcane varieties to water deficiency through physiological traits","authors":"Marcelo de Almeida Silva, Marcela Cristina Brunelli-Nascentes, Hariane Luiz Santos, Carolina Ruv Lemes Gonçalves Mendes, Fernanda Pacheco de Almeida Prado Bortolheiro, Renan Fonseca Nascentes, João Domingos Rodrigues","doi":"10.1080/09291016.2023.2240273","DOIUrl":null,"url":null,"abstract":"ABSTRACT Water deficiency is one of the most limiting abiotic factors to sugarcane world production (Saccharum spp.). Data on chlorophyll content and gas exchange are used to select genotypes tolerant to water deficit. However, these variables are influenced by environmental factors, which vary intensely throughout the day. Thus, this research aimed to evaluate the influence of diurnal variation of gas exchange, leaf water potential, chlorophyll content, and SPAD index on the differentiation between genotypes tolerant and susceptible to water deficiency. The greenhouse experiment was conducted in a completely randomized 2 × 2 × 4 factorial scheme, with two varieties (RB867515/RB855453), two soil water tensions [without water deficiency (–D) and with water deficiency (+D)], and four evaluation times (7 am, 10 am, 1 pm, and 4 pm) with four replicates. RB867515 maintained greater CO2 assimilation, stomatal conductance, transpiration rate, intrinsic transpiration efficiency, leaf water potential, total chlorophyll content, and SPAD index under +D, regulating carbon gain about water loss and providing greater shoot biomass under +D compared to RB855453. The best times to perform the measurements for selecting tolerant genotypes based on physiological traits and specifically on the SPAD index are at 10 am and between 7 am and 10 am, respectively. GraphicalABSTRACT","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biological Rhythm Research","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/09291016.2023.2240273","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

ABSTRACT Water deficiency is one of the most limiting abiotic factors to sugarcane world production (Saccharum spp.). Data on chlorophyll content and gas exchange are used to select genotypes tolerant to water deficit. However, these variables are influenced by environmental factors, which vary intensely throughout the day. Thus, this research aimed to evaluate the influence of diurnal variation of gas exchange, leaf water potential, chlorophyll content, and SPAD index on the differentiation between genotypes tolerant and susceptible to water deficiency. The greenhouse experiment was conducted in a completely randomized 2 × 2 × 4 factorial scheme, with two varieties (RB867515/RB855453), two soil water tensions [without water deficiency (–D) and with water deficiency (+D)], and four evaluation times (7 am, 10 am, 1 pm, and 4 pm) with four replicates. RB867515 maintained greater CO2 assimilation, stomatal conductance, transpiration rate, intrinsic transpiration efficiency, leaf water potential, total chlorophyll content, and SPAD index under +D, regulating carbon gain about water loss and providing greater shoot biomass under +D compared to RB855453. The best times to perform the measurements for selecting tolerant genotypes based on physiological traits and specifically on the SPAD index are at 10 am and between 7 am and 10 am, respectively. GraphicalABSTRACT

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

一天中的时间通过生理性状影响甘蔗品种对缺水的耐受性差异

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分钟内获得全文去求助

来源期刊

Biological Rhythm Research 生物-生理学

CiteScore

3.00

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The principal aim of Biological Rhythm Research is to cover any aspect of research into the broad topic of biological rhythms. The area covered can range from studies at the genetic or molecular level to those of behavioural or clinical topics. It can also include ultradian, circadian, infradian or annual rhythms. In this way, the Editorial Board tries to stimulate interdisciplinary rhythm research. Such an aim reflects not only the similarity of the methods used in different fields of chronobiology, but also the fact that many influences that exert controlling or masking effects are common. Amongst the controlling factors, attention is paid to the effects of climate change on living organisms. So, papers dealing with biometeorological aspects can also be submitted. The Journal publishes original scientific research papers, review papers, short notes on research in progress, book reviews and summaries of activities, symposia and congresses of national and international organizations dealing with rhythmic phenomena.