Assessment of terminal heat tolerance ability of wheat genotypes based on physiological traits using multivariate analysis

Nagar, Shivani; Singh, Virendra; Arora, Ajay; Dhakar, Rajkumar; Ramakrishnan, S.

doi:10.1007/s11738-015-2017-2

Cited by 31 publications

(18 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Breeding for heat tolerance is still in the preliminary stage and therefore, much attention is given to the genetic improvement of wheat to heat stress. In recent years, several studies have been done to find out wheat genotypes tolerant to heat stress (Kumar et al 2010;Sareen et al 2012;Kumari et al 2013;Nagar et al 2015).…”

Section: Genetic Managementmentioning

confidence: 99%

Heat stress effects and management in wheat. A review

Akter

Islam

2017

Agron. Sustain. Dev.

294

183

View full text Add to dashboard Cite

Increasing temperature and consequent changes in climate adversely affect plant growth and development, resulting in catastrophic loss of wheat productivity. For each degree rise in temperature, wheat production is estimated to reduce by 6%. A detailed overview of morpho-physiological responses of wheat to heat stress may help formulating appropriate strategies for heat-stressed wheat yield improvement. Additionally, searching for possible management strategies may increase productivity and sustainability of growing wheat. The major findings from this review are as follows: (1) heat stress significantly reduces seed germination and seedling growth, cell turgidity, and plant water-use efficiency; (2) at a cellular level, heat stress disturbs cellular functions through generating excessive reactive oxygen species, leading to oxidative stress; (3) the major responses of wheat to heat stress include the enhancement of leaf senescence, reduction of photosynthesis, deactivation of photosynthetic enzymes, and generation of oxidative damages to the chloroplasts; (4) heat stress also reduces grain number and size by affecting grain setting, assimilate translocation and duration and growth rate of grains; (5) effective approaches for managing heat stress in wheat include screening available germplasm under field trials and/or employing marker-assisted selection, application of exogenous protectants to seeds or plants, mapping quantitative trait locus conferring heat resistance and breeding; (6) a well-integrated genetic and agronomic management option may enhance wheat tolerance to heat. However, the success of applying various techniques of heat stress management requires greater understanding of heat tolerance features, molecular cloning, and characterization of genes. The overall success of the complex plant heat stress management depends on the concerted efforts of crop modelers, molecular biologists, and plant physiologists.

show abstract

Section: Genetic Managementmentioning

confidence: 99%

Heat stress effects and management in wheat. A review

Akter

Islam

2017

Agron. Sustain. Dev.

294

183

View full text Add to dashboard Cite

show abstract

“…They suggested that cultivars grouped in the same cluster with high values for yield parameters could be used in breeding programs to produce elite wheat cultivars. Similarly, Nagar et al (2015) performed a cluster analysis study to identify heat-tolerant wheat cultivars.…”

mentioning

confidence: 99%

Cluster Analysis of Historical and Modern Hard Red Spring Wheat Cultivars Based on Parentage and HPLC Analysis of Gluten‐Forming Proteins

et al. 2017

View full text Add to dashboard Cite

Cereal Chem. 94(3):560-567Thirty hard red spring (HRS) wheat cultivars released between 1910 and 2013 were analyzed to determine how they cluster in terms of parentage and HPLC analysis of gliadins and unreduced proteins. Markers for reduced height genes were assessed to determine associations between semidwarfism and protein composition, as well as quality characteristics. In terms of parentage, the clusters formed were grouped according to release year and semidwarfism. Farinograph development time and stability showed significant (P £ 0.05) differences between clusters, indicating improvement of mixing characteristics over time. Flour ash content was significantly different (P £ 0.05) between clusters, indicating improved milling quality. The clusters based on the gliadin reverse-phase HPLC peak binary data did not group cultivars according to release year and the semidwarf characteristic. However, cultivars were grouped according to year in the absorbance area based dendrogram. The clusters based on absorbance area of size-exclusion HPLC showed significant (P £ 0.05) differences for release year, the semidwarf characteristic, and farinograph stability. Overall, the results indicate that the introduction of reduced height genes accompanied the improvements of dough mixing and breadmaking quality characteristics, without altering the composition of gliadin proteins over the last 100 years of HRS wheat breeding. † Corresponding

show abstract

“…Also, Fv/ Fm had decreased in sugar beet by drought stress (Mohammadian et al, 2003). In addition, possibility of using biomass, canopy temperature depression, greenness index and Fv/Fm for precise screening in heat-tolerant wheat genotypes has been proved (Joshi et al, 2007;Nagar et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…The quantum efficiency of PSII (Fv/Fm) which represents plant nutrient and health status is related to chlorophyll concentration (Mohammadian et al, 2003;Kumar et al, 2017), and has a positive relationship with CO 2 fixation and dry matter production (Sharma et al, 2015). In addition, greenness index and dry mass are important when plants are screened for heat tolerance (Joshi et al, 2007;Nagar et al, 2015;Zhou et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The response of the sugar beet (Beta vulgaris L.ssp. vulgaris var. altissima Döll) genotypes to heat stress in initial growth stage

Malmir

Mohammadian

Sorooshzadeh

et al. 2020

AAS

View full text Add to dashboard Cite

The response of the sugar beet (Beta vulgaris L.ssp. vulgaris var. altissima Döll) genotypes to heat stress in initial growth stage Abstract: The continuous trend of global warming and increasing interest toward cultivating sugar beet (Beta vulgaris L. ssp. vulgaris var. altissima Döll) in tropical regions led us to conduct this study to investigate the effect of high temperature on sugar beet at initial growth stages. Thirty one genotypes were incubated at two temperatures (20 °C and 30 °C) in laboratory for germination test. The same genotypes were assessed for physiological parameters at 30 °C in greenhouse, too. Increasing temperature decreased germination indices with a high variability among the genotypes. Seed vigor index and seminal root length were decreased higher than other indices. The genotypes with higher greenness index had higher total dry mass, leaf area and leaf temperature depression (LTD), and those with higher seed vigor index indicated great quantum efficiency of PSII (Fv/Fm) values. 'S1-92521' produced high records in both laboratory and greenhouse experiments. Although 'S1-92521' showed good tolerance in both laboratory and greenhouse experiments, totally, sugar beet genotypes had different performance at two experiments. According to the results, seed vigor index could be used as a screening tool in laboratory, and LTD and Fv/Fm were considered as good criteria for screening heat-tolerant genotypes in greenhouse. Odziv genotipov sladkorne pese (Beta vulgaris L. ssp. vulgaris var. altissima Döll) na vročinski stres v začetnih fazah rastiIzvleček: Naraščajoči trend globalnega segrevanja in vse večji interes za gojenje sladkorne pese (Beta vulgaris L. ssp. vulgaris var. altissima Döll) v tropskih območjih so privedli k izvedbi te raziskave, v kateri je bil preučevan učinek visokih temperature na sladkorno peso v začetnih fazah rasti. 31 genotipov je bilo inkubiranih pri dveh temperaturah (20 °C in 30 °C) v laboratoriju za kalitvene teste. Na istih genotipih so bili v rastlinjaku ocenjeni fiziološki parametri pri temperaturi 30 °C Povišanje temperature je zmanjšalo indekse kalitve z veliko spremenljivostjo med genotipi. Indeks vitalnosti semen in dolžina semenske korenine sta se bolj zmanjšala kot drugi indeksi. Genotipi z večjimi indeksi zelenosti so imeli večjo celokupno suho maso, večjo listno površino in večji upad temperature listov (LTD), genotipi z večjimi indeksi vitalnosti semen so pokazali velike vrednosti kvantne učinkovitosti PSII (Fv/Fm). 'S1-92521'je imel velike vrednosti vseh merjenih parametrov tako v laboratoriju kot v rastlinjaku. Čeprav je imel genotip 'S1-92521' dobro tolerance na visoke temperature tako v laboratoriju kot v rastlinjaku, so imeli drugi genotipi sladkorne pese zelo različne odzive v obeh poskusih. Glede na rezultate bi lahko indeks vitalnosti semen uporabili kot primerno orodje za preiskušanje genotipov v laboratoriju, parametra LTD in Fv/Fm pa sta se izkazala kot dober kriterij za preiskušanje genotipov na visoke temperature v rastlinjaku.Ključne besede: p...

show abstract

Assessment of terminal heat tolerance ability of wheat genotypes based on physiological traits using multivariate analysis

Cited by 31 publications

References 21 publications

Heat stress effects and management in wheat. A review

Heat stress effects and management in wheat. A review

Cluster Analysis of Historical and Modern Hard Red Spring Wheat Cultivars Based on Parentage and HPLC Analysis of Gluten‐Forming Proteins

The response of the sugar beet (Beta vulgaris L.ssp. vulgaris var. altissima Döll) genotypes to heat stress in initial growth stage

Contact Info

Product

Resources

About