Relationship of Excised-Leaf Water Loss Rate and Yield of Durum Wheat in Diverse Environments

Clarke, J. M.; Romagosa, I.; Jana, Subinoy; Srivastava, J. P.; McCaig, T. N.

doi:10.4141/cjps89-130

Cited by 53 publications

(32 citation statements)

References 8 publications

(10 reference statements)

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“…Information from these experiments demonstrated genotypic differences for IWC and ELWL. Clarke et al (1989) have reported that accessions with low rates of water loss from excised leaves had higher yields than those of accessions with higher rates of water loss from excised leaves when grown under water-limited conditions. Excised leaf water loss had been widely used as a selection parameter for drought tolerance in various crop plants (Bhutta, 2007;Ali et al, 2009).…”

Section: Methodsmentioning

confidence: 99%

Genotypic variability for root/shoot parameters under water stress in some advanced lines of cotton (Gossypium hirsutum L.)

Riaz¹,

Farooq²,

Sakhawat³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Research pertaining to genetic variability parameters, heritability, and genotypic, phenotypic, simple, and environmental correlations for various seedling traits in five elite advanced cotton (Gossypium hirsutum L.) lines (FH-113, FH-114, FH-941, FH-942, and FH-2015) and one check (CIM-496) was carried out during October and November 2010 under greenhouse conditions at the Cotton Research Institute (Faisalabad, Pakistan). Material was raised in plastic tubes with a randomized complete block design replicated three times. Three drought shocks were applied by withholding water from the tube-sown plants for 8-, 10-, and 12-day intervals. After 60 days of sowing, data on root/shoot traits like root length (cm), shoot length (cm), root weight (g), shoot fresh weight (g), lateral root number, root dry weight (g) shoot dry weight (g), and total plant weight (g) were recorded. Considerable genotypic variations existed between genotypes for all seedling characters. Higher broad-sense heritability estimates were found for all traits studied. Maximum broad- Genotypic variability of Gossypium hirsutum sense heritability coupled with high genetic advance in root length (0.99, 17.34), lateral root number (0.91, 2.89), and shoot length (0.90, 4.35) suggested a potential for genetic improvement through breeding and selection. The correlation coefficients among root length, shoot length, root dry weight, fresh shoot weight, and total plant weight were positively and significantly correlated; thus, they can be selected simultaneously as drought tolerance selection indexes owing to the absence of undesired relationships. Genotypes FH-942 and FH-113 had the lowest excised leaf water loss during the first 4 h and also for the next 4 h. Therefore, these two advanced lines with high initial water content and lower excised leaf water loss had better adaptation to water stress.

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Section: Methodsmentioning

confidence: 99%

Genotypic variability for root/shoot parameters under water stress in some advanced lines of cotton (Gossypium hirsutum L.)

Riaz¹,

Farooq²,

Sakhawat³

et al. 2013

Genet. Mol. Res.

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“…Contrasting information is reported in the literature regarding the association between physiological measurements and yield performance under stress. (Winter et al 1988;Clarke et al 1989;. Translocation ability of different barley and wheat genotypes in the absence of transient photosynthesis was, in some experiments, positively associated with yield and in others was not associated (Martiniello et al 1987;Blum and Pnuel 1990;Blum et al 1991).…”

mentioning

confidence: 99%

Evaluation of field and laboratory predictors of drought and heat tolerance in winter cereals

Gavuzzi¹,

Rizza²,

Palumbo³

et al. 1997

Can. J. Plant Sci.

336

157

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. Evaluation of field and laboratory predictors of drought and heat tolerance in winter cereals. Can. J. Plant Sci 77: 523-531. In Mediterranean regions, plant breeding programs are being conducted to select genotypes having high and stable yields. Screening techniques that are able to identify desirable genotypes based on the evaluation of physiological traits related to stress tolerance could be useful, particularly if they are rapid, simple and inexpensive. The objectives of this study were: i) to evaluate the validity of four laboratory screening tests to discriminate among bread wheat (Triticum aestivum L.), durum wheat (Triticum turgidum L.) and barley (Hordeum vulgare L.) cultivars differing in adaptation to the Mediterranean climate; ii) to evaluate the repeatability of determinations performed on cultivars grown in different locations and years, and iii) to evaluate relationships among the tests and yield performance under stress. The tests were: cellular membrane stability after heat (CMS-HS) and drought stress (CMS-DS), tolerance to leaf water loss (LWL), and translocation capacity after the chemical desiccation (CD) of the photosynthetic apparatus. The CMS-HS and CMS-DS tests revealed genetic variability in all the three species. The LWL test did not differentiate genotypes at some sites. Genetic differences for grain yield, kernel weight and harvest index after chemical desiccation were evident for wheat genotypes but the test did not differentiate barley genotypes. The test performed under laboratory controlled conditions (CMS-HS, CMS-DS and LWL) was less affected by environment compared with the test based on the evaluation of the translocation capacity after chemical desiccation carried out in the field. We concluded that, when good standardization of procedures are obtained, the tests investigated can be regarded as possible tools in breeding programs for tolerance to heat and drought stress. ) selon leur adaptation au climat de la Méditerranée, ii) d'évaluer la répétabilité des déterminations faites sur un certain nombre des cultivars cultivés à des emplacements et en des années différents et iii) d'évaluer les rapports existant entre les tests et le rendement en condition de stress. Les tests portaient i) sur la stabilité de la membrane cellulaire après un stress thermique (SMC-st) et hydrique (SMC-sh), ii) sur la tolérance aux déperditions d'eau par les feuilles (DEF) et iii) sur la capacité de transport après dessiccation chimique (DC) de l'appareil photosynthétique. Les tests SMC-st et SMC-sh ont permis de mettre à jour l'existence de variabilité génétique au sein des trois espèces. A certains endroits, il etait pas été possible de différencier les génotypes selon les DEF. Des différences génétiques quant au rendement grainier, au poids des grains et à l'indice de moisson, à la suite d'une dessiccation chimique ont pu être constatées chez le blé, mais pas chez l'orge. Les tests réalisés en milieu contrôlé (SMC-st, SMC-sh et DEF) étaient moins sensibles aux conditions environnementales que l...

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“…Genotypic differenies in residual transpiration of wheat have been reported (Clarke and McCaig 1982), and low rates may be associated with grain yield in very dry environments (Clarke and Townley-Smith 1986;Clarke et al 1989). Neither the mechanisms ofthe differences in residual transpiration nor the effects of residual transpiration on water use have been precisely determined.…”

mentioning

confidence: 99%

Effect of drought stress on residual transpiration and its relationship with water use of wheat

Clarke¹,

Richards²,

Condon³

1991

Can. J. Plant Sci.

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Relationship of Excised-Leaf Water Loss Rate and Yield of Durum Wheat in Diverse Environments

Cited by 53 publications

References 8 publications

Genotypic variability for root/shoot parameters under water stress in some advanced lines of cotton (Gossypium hirsutum L.)

Genotypic variability for root/shoot parameters under water stress in some advanced lines of cotton (Gossypium hirsutum L.)

Evaluation of field and laboratory predictors of drought and heat tolerance in winter cereals

Effect of drought stress on residual transpiration and its relationship with water use of wheat

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