Cell Membrane Stability in Relation to Drought Tolerance in Wheat Genotypes

SummaryEffectiveness of the polyethylene glycol (PEG) test for measuring cell membrane stability (CMS) to select drought-tolerant genotypes in wheat was investigated. PEG test was compared with two other tests. Genetic variability of CMS was also investigated.Drought was induced artificially in pot-grown plants and in excised leaves, and percentage injury in leaf tissues by drought stress as measured by CMS was compared with that by PEG test. Percentage injury in leaf tissues of pot-grown plants was not correlated significantly with that by PEG test. However, percentage injury in excised leaves was well correlated with that in PEG test. The results suggest that the PEG test has merit in measuring drought tolerance in wheat. Frequency distribution of CMS in winter wheat lines was closely related to the characteristic pattern of quantitative inheritance and therefore CMS of wheat seems to be controlled by polygene action.

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Drought tolerance assessment of African cowpea accessions based on stomatal behaviour and cell membrane stability

The Journal of Agricultural Science ◽

10.1017/s002185960800806x ◽

2008 ◽

Vol 146 (6) ◽

pp. 689-694 ◽

Cited By ~ 5

Author(s):

M. T. LABUSCHAGNE ◽

R. VERHOEVEN ◽

M. NKOUANESSI

Keyword(s):

Cell Membrane ◽

Drought Tolerance ◽

Membrane Stability ◽

Sub Saharan Africa ◽

Cell Membrane Stability ◽

Drought Tolerant ◽

Stomatal Behaviour ◽

Wide Range ◽

Drought Conditions ◽

Sub Saharan

SUMMARYIn Sub-Saharan Africa, cowpea is well known for its ability to survive under conditions of water stress and it plays an important role in regions where drought is the factor most limiting to crop yield. In the present study, the drought tolerance levels of 20 African cowpea accessions from three countries were evaluated. A number of the genotypes showed drought tolerance, the merits of stomatal behaviour and cell membrane stability to assess drought tolerance was demonstrated. Damage to the cell membranes caused by drought was less in tolerant accessions. Stomatal opening was also better regulated; the opening was smaller under drought conditions, thus reducing transpiration (T). The wide range of drought tolerance observed among the accessions suggests the possibility of breeding drought-tolerant cultivars in cowpea. Drought-tolerant accessions included Bafoussam 1, M.66, Bafoussam 3, Hluhluwa, Bafoussam 4, Balen, Makueni, Bafoussam 2 and Okhalweni and these could be recommended to breeders as valuable material for drought tolerance improvement in cowpea.

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Effect of drought stress on different physiological traits in bread wheat

SAARC Journal of Agriculture ◽

10.3329/sja.v16i1.37418 ◽

2018 ◽

Vol 16 (1) ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

I Nowsherwan ◽

G Shabbir ◽

SI Malik ◽

M Ilyas ◽

MS Iqbal ◽

...

Keyword(s):

Drought Stress ◽

Cell Membrane ◽

Water Content ◽

Chlorophyll Content ◽

Relative Water Content ◽

Membrane Stability ◽

Physiological Traits ◽

Wheat Genotypes ◽

Cell Membrane Stability ◽

Relative Water

The present study was designed to evaluate the changes in different physiological traits such as proline content, cell membrane stability, relative water content and chlorophyll content under drought stress in sixteen wheat genotypes. Wheat genotypes (99FJ-03, Marvi-2000, WC- 13, WC-24, WC-19, Faisalabad-85, Kaghan, Bahawalpur, Zarlashta, Punjab-96, Shafaq, Maxi-pak, WC-20, Chenab-70, AUR-0809, Chakwal) were sown during rabiseason of 2013-14 following randomized complete block design with three replications. Drought stress was induced by withholding water for 30 days at heading and anthesis stage. Genotypes were significant for different physiological traits like relative water content, proline content, cell membrane stability and chlorophyll content under drought stress which indicated that some genotypes were more tolerant against drought stress than others. Among tested wheat genotypes, Maxi-Pak was found to be potential variety for relative water content, cell membrane stability, chlorophyll content and yield. Hence, it can be used in future wheat breeding programme for developing drought tolerant genotypes.SAARC J. Agri., 16(1): 1-6 (2018)

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