Germplasm enhancement for adaptation to climate changes

Carena, M. J.

doi:10.1590/s1984-70332011000500009

Cited by 13 publications

(9 citation statements)

References 18 publications

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Section: Discussionsupporting

confidence: 90%

“…These results corroborate those of Joshi and Bauer (2006) and Napasintuwong and Pray (2014) who also found that early maturity significantly affects adoption of improved varieties. The significant effect of yield potential on adoption of Apomuden is also in line with prior findings (Carena, 2011), especially given that Northern Ghana has a unimodal rainy season distribution pattern. The significant and negative coefficients of early maturity, disease resistance, yield potential, and ease of establishing with scarce rains in the Obare model imply that the farmers found these attributes of Obare inferior as compared to those of Apomuden.…”

Section: The Role Of Other Varietal Attributes In the Adoption Of Ofspsupporting

confidence: 88%

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Effect of varietal attributes on the adoption of an orange-fleshed sweetpotato variety in Upper East and Northern Ghana

Adekambi

Okello²,

Rajendran

et al. 2020

Outlook Agric

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Despite sustained economic growth and reduction in some of forms of malnutrition, Ghana still faces a national prevalence rate of 20.8% vitamin A deficiency (VAD) among for children 6–59 months old. Orange-fleshed sweetpotato ( Ipomoea batatas L.) (OFSP) can significantly improve vitamin A intake and contribute toward reducing VAD, especially in Northern Ghana where VAD is 31% among young children. Several poverty and nutrition projects in Ghana have promoted the use of OFSP for its health benefits. This study assesses the effect of three varietial attributes on adoption of the first released OFSP variety in Northern Ghana namely, Apomuden. The study concluded that sweetness, taste and dry matter have joint significant effects on adoption of an OFSP variety. The positive and negative traits highlighted will inform the on-going breeding effort.

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Section: Discussionsupporting

confidence: 90%

Section: The Role Of Other Varietal Attributes In the Adoption Of Ofspsupporting

confidence: 88%

Effect of varietal attributes on the adoption of an orange-fleshed sweetpotato variety in Upper East and Northern Ghana

Adekambi

Okello²,

Rajendran

et al. 2020

Outlook Agric

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“…We found the SS x non-SS heterotic pattern to be frequent in our trials representing short-season ex-PVP and current industry genetic materials, in agreement with Mikel and Dubley (2006). Further sampling for larger genetic diversity , Carena 2011, Sharma and Carena 2012) is needed to develop alternative and productive heterotic patterns. Integration of exotic germplasm improvement with inbred line development has produced NDSU inbred lines associated with different heterotic groups.…”

Section: Heterotic Pattern Detectionmentioning

confidence: 99%

Identification of heterotic patterns between expired proprietary, NDSU, and industry short-season maize inbred lines

Bari

Carena

Pereira

2016

Crop Breed. Appl. Biotechnol.

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“…Germplasm carrying unique genes can break environmental margins (Carena, 2011). However, Brown (1953) pointed out that farmers utilized only 2% of the world's maize germplasm after hybrids dominated the maize production market.…”

Section: Introductionmentioning

confidence: 99%

Earlytrop: A Program to Adapt 100% Tropical Maize Germplasm to Short-Season Environments

Carena¹

2021

FPBJ

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Tropical maize germplasm can contribute useful and unique genes. It can provide greater resistance to pests and diseases, better quality crops, and trait genes and combinations not often present in commercially available northern U.S. temperate hybrids. Uniform farmer fields with genetically identical hybrids have a high risk of genetic vulnerabilities due to disease epidemics and abiotic stresses, especially after the recent major industry mergers. The EarlyTROP program was created with the long-term goal to increase the genetic diversity of short-season maize carrying 100% tropical germplasm. Five tropical maize populations were assessed for adaptation to ND short-season environments: NDSHLC (an improved composite from highland Mexico), BS16 (an improved strain of ETO from Colombia), BS28 (an improved strain of Tuxpeño from Mexico), BS29 (an improved strain of Suwan-1 from Thailand), and BS39 (an improved strain of Tusón mainly from Brazil and Cuba). The program conducted three cycles of stratified mass selection for days to silking near Casselton and Prosper, ND for all varieties except for NDSHLC, which had six selection cycles of stratified mass selection. Selected populations (NDHighland, NDEto, NDTuxpeño, NDSuwan-1, and NDTusón), and 31 checks including standard known and commercialized population and single-cross hybrids were evaluated across 12 short-season environmend. Stratified mass selection was a cost-effective and successful breeding procedure for adapting tropical populations to short-season environments without exceptions. NDTuxpeño is ready to be used in very short-season areas. It has shown to be the driest population of the experiment with 17.6% grain moisture at harvest time, statistically lower than 18 checks. Thus, confirming its adaptation to short-season environments. NDHighland, NDEto, NDSuwan-1, and NDTusón also showed evidence of adaptation. Adapted varieties represent unique new options for maize breeders to expand the genetic base of their current breeding programs. This gene pool, not present in current U.S. genome sequences or short-season areas, will offer unique early maturing competitive genes and products not available in the northern U.S. industry.

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Germplasm enhancement for adaptation to climate changes

Abstract: -Billions of dollars and crops

Cited by 13 publications

References 18 publications

Effect of varietal attributes on the adoption of an orange-fleshed sweetpotato variety in Upper East and Northern Ghana

Effect of varietal attributes on the adoption of an orange-fleshed sweetpotato variety in Upper East and Northern Ghana

Identification of heterotic patterns between expired proprietary, NDSU, and industry short-season maize inbred lines

Earlytrop: A Program to Adapt 100% Tropical Maize Germplasm to Short-Season Environments

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