Association of staygreen trait with canopy temperature depression and yield traits under terminal heat stress in wheat (Triticum aestivum L.)

Kumari, Maya; Pudake, Ramesh Namdeo; Singh, Virender; Joshi, Arun Kumar

doi:10.1007/s10681-012-0780-3

Cited by 64 publications

(62 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This stay‐green trait could be a morphological indicator to screen for heat tolerance in tomato, as shown in wheat (Kumari et al. , Sharma et al. ).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Zhou

Kjær

Rosenqvist

et al. 2016

J Agronomy Crop Science

View full text Add to dashboard Cite

Tomato cultivars differ in their sensitivity to heat stress, and the sensitivity depends on the developmental stage of the plants. It is less known how heat stress affects tomato at the anthesis stage in terms of leaf physiology and fruit set and whether the ability of tomato to tolerate heat at different developmental stages is linked. To investigate photosynthetic gas exchange characteristics, carbohydrate content and fruit set during heat stress, a thermo-tolerant cultivar ('LA1994') and a thermo-sensitive cultivar ('Aromata') were studied at the seedling and anthesis stage. The photosynthetic parameters, maximum quantum efficiency of photosystem II (F v /F m ), chlorophyll content, carbohydrate content and fruit set were determined in plants grown at 26/18°C (control) and 36/28°C (heat stress). The physiological responses including net photosynthetic rate (P N ), chlorophyll content and F v /F m decreased in 'Aromata' at both developmental stages during heat stress, whereas they were unaltered in 'LA1994' during heat stress as compared to the respective control. This was accompanied by lower contents of glucose and fructose in mature leaves of 'Aromata' at the seedling stage under heat stress. In contrast, the glucose content increased while the fructose content was unaltered in mature leaves of 'LA1994' at the seedling stage under heat stress. High temperature induced a similar change in carbohydrate content in the young leaves of both cultivars at anthesis. The fructose and sucrose content were unaffected in the mature leaves of 'Aromata' but significantly increased in 'LA1994' under heat stress at anthesis. The heat stress treatment decreased pollen viability and inhibited fruit set due to flower wilting and abnormal abscission in 'Aromata', whereas fruit set was not inhibited in 'LA1994'. A decrease in chlorophyll content, photosynthesis and carbohydrate content in the mature leaves of tomato could be related to fruit set failure at high temperature. The results show that physiological responses to heat stress at the seedling stage correspond with the responses at the anthesis stage, demonstrating that screening for heat stress sensitivity can be carried out in young plants.

show abstract

“…This stay‐green trait could be a morphological indicator to screen for heat tolerance in tomato, as shown in wheat (Kumari et al. , Sharma et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the heat tolerance trait is characterized with the ability of the plant to maintain a high assimilation of carbohydrates and uptake of nutrients during the heat stress (Kumari et al. , Vignjevic et al. ).…”

Section: Discussionmentioning

confidence: 99%

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Zhou

Kjær

Rosenqvist

et al. 2016

J Agronomy Crop Science

View full text Add to dashboard Cite

show abstract

“…Wheat lines subjected to heat stress at anthesis and later stages decreased biomass, grain filling duration, yield and thousand grain weight, but such decrease depended on the stay‐green ability (Kumari et al ). In our study, the plants may have been diverting photo‐assimilates for grain filling during the stress period, rather than for leaf growth.…”

Section: Discussionmentioning

confidence: 99%

Wheat cultivars selected for high F_v/F_m under heat stress maintain high photosynthesis, total chlorophyll, stomatal conductance, transpiration and dry matter

Sharma

Andersen

Ottosen

et al. 2014

Physiologia Plantarum

272

157

View full text Add to dashboard Cite

The chlorophyll fluorescence parameter Fv /Fm reflects the maximum quantum efficiency of photosystem II (PSII) photochemistry and has been widely used for early stress detection in plants. Previously, we have used a three-tiered approach of phenotyping by Fv /Fm to identify naturally existing genetic variation for tolerance to severe heat stress (3 days at 40°C in controlled conditions) in wheat (Triticum aestivum L.). Here we investigated the performance of the previously selected cultivars (high and low group based on Fv /Fm value) in terms of growth and photosynthetic traits under moderate heat stress (1 week at 36/30°C day/night temperature in greenhouse) closer to natural heat waves in North-Western Europe. Dry matter accumulation after 7 days of heat stress was positively correlated to Fv /Fm . The high Fv /Fm group maintained significantly higher total chlorophyll and net photosynthetic rate (PN ) than the low group, accompanied by higher stomatal conductance (gs ), transpiration rate (E) and evaporative cooling of the leaf (ΔT). The difference in PN between the groups was not caused by differences in PSII capacity or gs as the variation in Fv /Fm and intracellular CO2 (Ci ) was non-significant under the given heat stress. This study validated that our three-tiered approach of phenotyping by Fv /Fm performed under increasing severity of heat was successful in identifying wheat cultivars differing in photosynthesis under moderate and agronomically more relevant heat stress. The identified cultivars may serve as a valuable resource for further studies to understand the physiological mechanisms underlying the genetic variability in heat sensitivity of photosynthesis.

show abstract

“…Cooler canopies were previously associated with increased stay-green across different sowing dates in a large and diverse wheat population (Kumari et al , 2013). By deploying ArduCrop ® thermo-imaging sensors (Box 3, upper panel) in the canopy architecture experiment above, monitoring changes in canopy temperature every five minutes (Box 3, lower panel), we were able to confirm that NILs selected with canopy architectures as phenotypically erect, waxy or rolling were cooler at anthesis than their near-isogenic counterparts.…”

Section: The Opportunitymentioning

confidence: 98%

High-throughput phenotyping technologies allow accurate selection of stay-green

Rebetzke

Berni

Bovill

et al. 2016

EXBOTJ

View full text Add to dashboard Cite

Association of staygreen trait with canopy temperature depression and yield traits under terminal heat stress in wheat (Triticum aestivum L.)

Cited by 64 publications

References 32 publications

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Wheat cultivars selected for high F_v/F_m under heat stress maintain high photosynthesis, total chlorophyll, stomatal conductance, transpiration and dry matter

High-throughput phenotyping technologies allow accurate selection of stay-green

Contact Info

Product

Resources

About

Association of staygreen trait with canopy temperature depression and yield traits under terminal heat stress in wheat (Triticum aestivum L.)

Cited by 64 publications

References 32 publications

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Physiological Response to Heat Stress During Seedling and Anthesis Stage in Tomato Genotypes Differing in Heat Tolerance

Wheat cultivars selected for high Fv/Fm under heat stress maintain high photosynthesis, total chlorophyll, stomatal conductance, transpiration and dry matter

High-throughput phenotyping technologies allow accurate selection of stay-green

Contact Info

Product

Resources

About

Wheat cultivars selected for high F_v/F_m under heat stress maintain high photosynthesis, total chlorophyll, stomatal conductance, transpiration and dry matter