Breeding Soybeans for Drought Resistance

Myers, O.; Yopp, John H.; Krishnamani, M.R.S.

doi:10.1002/9781118061015.ch7

Cited by 2 publications

(2 citation statements)

References 169 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Drought Bottle Gourd Landraces and Its Potential Contribution to Food Security DOI: http://dx.doi.org/10.5772/intechopen.108641 or water stress in one of the single important environmental factors limiting crop production in the region. Drought can be defined as an extended period (months or years) where a region experiences a deficiency in water supply whether surface or underground water [32]. The plant mechanism to cope with stress is based on the choice of response it adopts in responding to developing water stress [22].…”

Section: Drought Tolerance Of Bottle Gourd Landracesmentioning

confidence: 99%

Bottle Gourd Landraces and Its Potential Contribution to Food Security

Sithole¹,

Ncama²,

Magwaza³

et al. 2023

Landraces - Its Productive Conservation in Animals and Plants

View full text Add to dashboard Cite

Issues surrounding water scarcity and malnutrition in the rural household of sub-Saharan Africa continue to be a problem and pose threat to food security. In such cases, traditional and underutilized crops have been proposed because of their likely suitability in these marginal areas of crop production characterized by abiotic (drought and heat) and biotic environmental stresses (pest and diseases). Bottle gourd is one such crop with multipurpose use and a huge potential to contribute to food security. The crop is grown for its leaves, fruits, and seeds from landraces providing important nutrition for both humans and livestock. A lot has been documented about its medical properties. The crop exhibits wide genetic variation for qualitative and quantitative traits, which can be used for cultivar development. The objective of this review was to provide information on why bottle gourd is an important food security crop in sub-Saharan Africa. The first section of the paper presents water scarcity, food production, and climate change. This is followed by the section on the neglected underutilized crops species. Then the section of drought tolerance of the crop is presented, and lastly, the section on potential contribution of the crop to food security is presented.

show abstract

Section: Drought Tolerance Of Bottle Gourd Landracesmentioning

confidence: 99%

Bottle Gourd Landraces and Its Potential Contribution to Food Security

Sithole¹,

Ncama²,

Magwaza³

et al. 2023

Landraces - Its Productive Conservation in Animals and Plants

View full text Add to dashboard Cite

show abstract

“…Due to the expansion of the soybean growing region, new varieties with more favourable water status, capable to have satisfactory yields even under conditions with the water scarcity were developed in the process of selection under conditions with reduced amounts of water. It was observed at the end of the last century that agricultural production was performed in over 50% of arable lands with occasional or constant water deficits (MYERS et al, 1986). These areas have been increasing with global warming and ever faster climate changes.…”

Section: Introductionmentioning

confidence: 99%

Decrease of yield components and morphological traits of soybean full-sibs under drought conditions

et al. 2020

View full text Add to dashboard Cite

Soybean, as a plant species, is native to regions with conditions favourable of humidity and temperatures for its growth and development. The expansion of the soybean growing area resulted in requirements of varieties with higher tolerance and more stable grain yield under drought conditions. In order to develop high yielding varieties, the method of full-sib (FS) selection was applied in this study, as one of many methods of recurrent selection. The basic principle of recurrent selection is a cyclic selection, with the aim to accumulate favourable alleles. Three most yielding F2:3 sister lines obtained from the crossing combination of varieties Kunitz and Kador, were used for two combinations. Progenies of two FS crossing combinations were tested in two locations during two years (2011 with more favourable and 2012 with less favourable precipitation distribution). The values of grain yield per plant, the most important components of yield and morphological traits decreased under less favourable conditions. The highest decrease was recorded in the number of pods and the number of grains per plant, whereas the lowest decrease was found for the 1000-grain weight. Regardless of the relatedness of the tested material, significant differences in response to drought were observed not only between two FS progenies, but also within progenies of each combination. Soybean grain yield is a complex trait strongly affected by environmental conditions. Under unfavourable conditions, the reductions in the following traits were observed in progenies of two sister combinations: grain yield per plant (26.5-36.0% and 25.6-42.7%), number of pods per plant (18.6-33.0% and 12.6-38.2%) and the number of grains per plant (18.1-30.2% and 14.3-37.6%). Three progenies of FS crossings with the lowest yield reduction were identified as suitable initial material for the development of varieties with higher tolerance to drought conditions.

show abstract

Breeding Soybeans for Drought Resistance

Cited by 2 publications

References 169 publications

Bottle Gourd Landraces and Its Potential Contribution to Food Security

Bottle Gourd Landraces and Its Potential Contribution to Food Security

Decrease of yield components and morphological traits of soybean full-sibs under drought conditions

Contact Info

Product

Resources

About