Genotype by environment effects on promiscuous nodulation in soybean (Glycine max L. Merrill)

Agoyi, Eric Etchikinto; Odong, Thomas; Tumuhairwe, John Baptist; Chigeza, Godfree; Diers, Brian W.; Tukamuhabwa, Phinehas

doi:10.1186/s40066-017-0107-7

Cited by 18 publications

(15 citation statements)

References 24 publications

(22 reference statements)

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“…was observed in the cowpea root system. Low P availability (Kyei-Boahen, Savala, Chikoye, & Abaidoo, 2017) in association with root-knot nematodes (Agoyi, Odong, Tumuhairwe, Chigeza, & Diers, 2017) may explain, at least partially, the relatively low number of nodules in this study.…”

Section: Effects Of Seed Mo Content and Bradyrhizobial Inoculation On Cowpea Yieldmentioning

confidence: 69%

Seeds enriched with molybdenum improve cowpea yield in sub‐humid tropical regions of Brazil

et al. 2021

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The possible benefits of molybdenum (Mo)-enriched seeds for grain legumes have yet to be addressed in sub-humid tropical areas, where cowpea (Vigna unguiculata L.) is an important crop. In 2016, seeds with 0.014 (low), 0.674, or 1.987 (high) μg seed −1 of Mo were harvested from plants sprayed with 0, 250, or 850 g ha -1 of Mo, respectively. These seeds were combined with either Bradyrhizobium inoculation (with or without) in 2017 or nitrogen (0 or 60 kg ha −1 ) in 2018 and evaluated under small farmer management in Maranhão State, Brazil. Maximum nodules plant −1 in these trials was 5.2. In 2017, inoculation acted synergistically with Mo-enriched seeds by increasing nodule weight. Averaged across inoculation levels, plants originated from high-Mo seeds had 36% higher leaf N concentration than those raised from low-Mo seeds. Inoculation did not affect yield, but plants grown from high-Mo seeds yielded 42% more than those raised from low-Mo seeds. In 2018, seed Mo content did not affect nodule and yield where urea was applied. However, without urea, plants raised from high-Mo seeds had 3.5-fold greater values for nodule number and weight and yielded 70% more than those grown from low-Mo seeds. We conclude that using Moenriched seeds associated with Bradyrhizobium inoculation would improve cowpea N nutrition and yield in a sustainable way.How to cite this article: Barbosa EPA, Sodré DN, Braun H, Vieira RF. Seeds enriched with molybdenum improve cowpea yield in sub-humid tropical regions of Brazil.

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Section: Effects Of Seed Mo Content and Bradyrhizobial Inoculation On Cowpea Yieldmentioning

confidence: 69%

Seeds enriched with molybdenum improve cowpea yield in sub‐humid tropical regions of Brazil

et al. 2021

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“…For instance, farmers can select promising varieties that flower and mature early in the strip intercropping to prevent drought and frost damage. In this regard, "TVu 13464" which attained earlier maturity in all the cropping systems during 2015-2016 and 2016-2017 than the local variety Glenda is an ideal variety for drought or pest evasion, as well as indicating that it is well adapted to mature early under the strip intercropping systems (Idahosa et al 2010;Agoyi et al 2017). Varieties that exhibit late maturity are known to be more vulnerable to drought and frost damage (Agbogidi and Egho 2012;Mafakheri et al 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, more pods and grain yield were produced during the 2015-2016 cropping season, because rainfall and temperature distributions during the reproductive phase of the crop were better than they had been during the 2016-2017 season (Table 1). Zerihun et al (2016) and Agoyi et al (2017) also observed that adequate soil moisture during the reproductive stage is known to enhance grain filling, which can result in an increased grain yield.…”

Section: Discussionmentioning

confidence: 99%

Yield and Economic Assessments of Five Cowpea Varieties in Cowpea-Maize Strip Intercropping in Limpopo Province, South Africa

Asiwe¹

2021

IJAB

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Farmers‟ traditional cropping practice in Limpopo Province is to mix and broadcast crops at planting without definite row arrangement. Although this practice is very easy and cost-saving, it leads to low plant density, hinders farm input application, and results in low crop yields and poor return on investment. Strip intercropping, where crops are planted with definite row arrangement, reduces inter-species competition, optimises plant population, and increases crop yield. Five cowpea varieties i.e. „TVu 13464‟, „IT86D-1010‟, „Glenda‟, „IT82E-16‟ and „IT87K-499-35‟ and maize was grown under strip intercropping, monocropping, and mixed intercropping as a control during two seasons. During both years, significant interactions were obtained between the cowpea varieties and the cropping systems in most of the variables measured. Cowpea sown in the strip intercropping performed better compared those sown in mixed intercropping. Cowpea varieties „IT86D-1010‟, „IT82E-16‟ and „IT87K-499-35‟ harvested more grain yield under monocropping and strip intercropping than under mixed intercropping. The land equivalent ratio (LER) of strip intercropping during the two seasons ranged between 1.25 and 2.29 and was higher compared to mixed intercropping, which ranged between 0.50 and 1.32. In conclusion, cowpea varieties „IT86D-1010‟, „IT82E-16‟ and „IT87K-499-35‟ sown with maize as strip intercropping resulted more profits under intercropping systems and were recommended for cultivation by farmers in the Limpopo region with low rainfall. Moreover, grain yield, LER, and net profit achieved by strip intercropping was three-fold more than mixed intercropping. © 2021 Friends Science Publishers

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“…Though not much work has been done regarding gei in soybean, soybean is highly photoperiod sensitive hence the need to widely test it in the production environments. Some of the documented works available include the gei influence reported on grain yields and nodulation traits in Uganda (Agoyi et al, ; Agoyi, Tumuhairwe, Afutu, Odong, & Tukamuhabwa, ; Tukamuhabwa, Assiimwe, Nabasirye, Kabayi, & Maphosa, ). These studies reported wide variation in the performance of the accessions from site to site for all the traits studied.…”

Section: Breeding Objectives Target Production Environments and Selementioning

confidence: 99%

“…Season/year to season/year variations were also reported. Agoyi et al () found the same site belonging to different mega environments depending on the season under consideration while assessing gei on various nodulation traits. The same trend was reported on grain yields by Agoyi et al ().…”

Section: Breeding Objectives Target Production Environments and Selementioning

confidence: 99%

Public sector soybean (Glycine max) breeding: Advances in cultivar development in the African tropics

Chigeza¹,

Boahen

Gedil³

et al. 2019

Plant Breeding

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Formal public sector soybean breeding in Africa spans over four decades, and it was initiated by the International Institute of Tropical Agricultural (IITA). As the demand of soybean continues to outstrip production, strategic projects such the Tropical Legume (TL) were initiated, in which the main goal was to enhance the productivity of soybean in the farmers' fields in Sub-Saharan Africa. One of the strategies to enhance the productivity of soybean in the farmers' fields is through developing and deploying improved soybean varieties in the target countries. Through the TL I and TL II projects, a number of varieties were released in the target countries, Kenya, Nigeria, Malawi and Mozambique by employing participatory variety selection (PVS). This review provides highlights of the achievements made by IITA breeding programme and insights of what needs to be done to enhance yield improvement for soybean in Africa using demand-driven breeding approaches.

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Genotype by environment effects on promiscuous nodulation in soybean (Glycine max L. Merrill)

Cited by 18 publications

References 24 publications

Seeds enriched with molybdenum improve cowpea yield in sub‐humid tropical regions of Brazil

Seeds enriched with molybdenum improve cowpea yield in sub‐humid tropical regions of Brazil

Yield and Economic Assessments of Five Cowpea Varieties in Cowpea-Maize Strip Intercropping in Limpopo Province, South Africa

Public sector soybean (Glycine max) breeding: Advances in cultivar development in the African tropics

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