Evaluation of diverse cowpea [Vigna unguiculata (L.) Walp.] germplasm accessions for drought tolerance

Nkoana, K. D.; Gerrano, Abe Shegro; Gwata, E. T.

doi:10.18805/lr-428

Cited by 10 publications

(16 citation statements)

References 14 publications

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“…High anthocyanin in selenite primed Nerica U7 could be responsible for high chlorophyll contents during water stress which might be as a result of the tolerant ability of the cultivar. Genetic variability and differential respond observed in plants could be due to their genotypes (Nkoana et al, 2019). Means along the row with the same alphabet are not significantly different.…”

Section: Investigating the Effectiveness Of Selenite On Drought Stresmentioning

confidence: 89%

Investigating the Effectiveness of Selenite on Drought Stressed Upland Rice

David

Akomolafe

Jolayemi

et al. 2020

IJARe

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Water stress is an enormous problem facing food production, especially in arid and semi-arid regions. Production of free radicals during water stress has led to oxidative stress, which eventually causes death of cells in plants. Therefore, it is important to tackle this issue knowing that rice is one of the most important cereal crops largely cultivated and consumed by humans and animals. The studies aimed at the effect of selenite on physiological and biochemical activities of water-stressed upland rice. Three Upland rice cultivars namely Nerica U4, Nerica U7 and Vandana were collected in Africa Rice Centre, Ibadan. The seeds were sterilized and soaked for 10 hours in different concentrations of Selenite (Se) (0 mg/l, 50 mg/l and 100 mg/l). Primed seed were planted into sterilized-sieved top soils. Plants were subjected to 0 (irrigated) and 8 days (non-irrigated) water stress. Selenite 50 mg/l improved plant height, number of leaves, total carotene, chlorophyll contents, biomass, grain number of upland rice during water stress. Selenite increased activities of APX as water stress progressively increased consequently, low MDA content was observed in cultivar Vandana. Furthermore, selenite significantly improved total carotene, chlorophyll contents, anthocyanin, and dry shoot weight in cultivar Nerica U7 during water stress. Selenite significantly stabilized activities of anthocyanin and CAT in cultivar Nerica U4 during water stress. Hence high grain yield was recorded in Nerica U4 and U7 in selenite primed upland rice during water stress. Selenite reduced lipid peroxidation in upland rice at 100mg/l. Therefore, it can be concluded that response of rice to selenite during water stress is based on tolerance capacity of the cultivars and also, selenite 50mg/l can help to improve growth and yield of upland rice in drought-prone area.

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Section: Investigating the Effectiveness Of Selenite On Drought Stresmentioning

confidence: 89%

Investigating the Effectiveness of Selenite on Drought Stressed Upland Rice

David

Akomolafe

Jolayemi

et al. 2020

IJARe

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“…Drought is defined as a sustained period without significant rainfall, or when the crops do not receive enough moisture for growth and development (Bodner et al 2015). Water stress during early plant establishment, flowering and pod filling stages severely affects productivity (Nkoana et al 2019). Although cowpea is drought tolerant when compared to other crops, severe drought, especially during pod setting and grain filling stages, can hamper the production of the crop (Singh and Raja Reddy 2011).…”

Section: Abiotic Constraints In Cowpea Productionmentioning

confidence: 99%

“…Drought is a complex quantitative trait, and breeding for drought tolerance combines selection for yield with expression of physiological traits correlated with drought tolerance to repeatable controlled stress environments. Several studies (Barrera-Figueroa et al 2011;Farooq et al 2012;Nkoana et al 2019) have indicated the presence of genetic variability for drought tolerance in cowpea, at different growth stages (reproductive, seedling and vegetative stages) using physiological and morphological traits. Progress towards cultivar development for drought tolerance is scarce, due to the complexity of this trait.…”

Section: Genetic Diversity For Drought Tolerance Breedingmentioning

confidence: 99%

Phenotypic, genotypic and nutritional divergence in cowpea and implications for drought tolerance breeding: a review

Masemola

Gerrano

Labuschagne

et al. 2023

Crop & Pasture Science

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Genetic diversity is crucial for crop improvement in any breeding program. Cowpea is an important indigenous grain vegetable legume crop. The crop has a significant potential to improve food and nutritional security in sub-Saharan Africa (SSA), and family income for resource poor famers. Cowpea is a source of proteins, vitamins (folate, thiamine and vitamin C), minerals (Fe, Zn, Mn and Ca) and amino acids such as lysine and tryptophan, hence, has a high potential for combating nutrient deficiencies. The SSA countries, including South Africa, have been experiencing many dry seasons, which have negatively affected agricultural production and productivity. Cowpea has a long taproot with the ability to grow in arid and semi-arid regions; however, lasting exposure to severe droughts will result in significant yield and grain quality reduction. There has been limited progress in drought tolerance research in cowpea due to the complexity of this trait, as it involves numerous genes, which in turn are affected by environmental conditions. It is therefore important to review research done on the nutritional, phenotypic and genotypic diversity of cowpea and the importance of diversity when breeding for complex quantitative traits such as drought tolerance and yield. The review will also outline the important omics tools used for drought tolerance breeding, cultivar development and as reference for future cowpea breeding.

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“…Crop productivity can be increased by the application of suitable amount of water wither saline or not under specific condition (Ebtisam et al, 2015). Water is considered as one of the most important environmental factors that reduces crop productivity more than any other factor (Saxena et al, 2017;Nkoana et al, 2019;Kiymaz et al, 2019;Jahantigh et al, 2019 andMiladinov et al, 2020). Belachew et al (2019) recorded significant effect of water deficit on the yield components in faba bean.…”

Section: Introductionmentioning

confidence: 99%

Effect of deficit irrigation on some growth parameters, yield and water productivity of broad bean crop

Wanas¹

2022

Al-Azhar Journal of Agricultural Research

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This experiment was conducted to evaluate the effect of the deficit irrigation on some growth parameters, crop productivity and crop water productivity of broad bean crop (Nubaria 1) during winter seasons of (2018/2019) and (2019/2020) in Faculty of Agriculture farm (Latitude of 30 0 25 \ 10.9N and longitude of 30 0 32 \ 34.2 E, mean altitude 32 meters above sea level), Al-Azhar University, El-Sadat City, Monufyia Governorate, Egypt. The experiment was a randomized complete block design The irrigation system was used under drip irrigation system. The plant growth periods are divided into three stages: vegetative growth stage (S1), flowering stage (S2) and seed filling stage (S3). The irrigation treatments are 100% of ETcrop (DI1) in all growth periods as a control, 85% of ETcrop (DI2) in one of the growth periods, then complete the remaining growth periods by 100% of ETcrop and 70% of ETcrop (DI3) in one of the growth period, then complete the remaining growth periods by 100% of ETcrop. The water requirements of broad bean crop were calculated from data of Central Laboratory for Agricultural Climate using CROPWAT 8.0 program. The results showed that the highest values of growth parameters (plant length, leaves number and dry weight) and yield of broad bean were obtained after irrigated by 100% of ETcrop followed by treatments which were irrigated with 85% of ETcrop at flowering stage without significant difference between them when compared to other treatments. The water productivity of 70% of ETcrop treatments is higher than the other treatments, although the yield of these treatments is the lowest compared to 100% and 85%.

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Evaluation of diverse cowpea [Vigna unguiculata (L.) Walp.] germplasm accessions for drought tolerance

Cited by 10 publications

References 14 publications

Investigating the Effectiveness of Selenite on Drought Stressed Upland Rice

Investigating the Effectiveness of Selenite on Drought Stressed Upland Rice

Phenotypic, genotypic and nutritional divergence in cowpea and implications for drought tolerance breeding: a review

Effect of deficit irrigation on some growth parameters, yield and water productivity of broad bean crop

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