Genotype × Environment Interaction of Mosaic Disease, Root Yields and Total Carotene Concentration of Yellow-Fleshed Cassava in Nigeria

Maroya, N.; Kulakow, Peter; Dixon, A. G. O.; Maziya‐Dixon, Busie

doi:10.1155/2012/434675

Cited by 26 publications

(26 citation statements)

References 12 publications

(13 reference statements)

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“…Parent-offspring regression analysis confirmed high heritability (˃0.60) for the trait [53][54][55]. High heritability for carotenoids content in cassava is further confirmed in stability studies assessing the relative importance of genotype, environment, and genotype-by-environment interaction [56][57][58] and estimations of general and specific combining ability effects [59]. An analysis of the segregation for TCC in large full-sib and self-pollinated families was conducted aiming at identifying patterns that could be explained by Mendelian genetics [53,54].…”

Section: Inheritance Of Carotenoids Content In Cassava Rootsmentioning

confidence: 69%

Carotenoids in Cassava Roots

Ceballos¹,

Davrieux²,

Talsma³

et al. 2017

Carotenoids

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Vitamin A deficiency (VAD) is a preventable tragedy that affects millions of people, particularly in sub-Saharan Africa. A large proportion of these people rely on diets based on cassava as a source of calories. During the last two decades, significant efforts have been made to identify sources of germplasm with high pro-vitamin A carotenoids (pVAC) and then use them to develop cultivars with a nutritional goal of 15 μg g −1 of β-carotene (fresh weight basis) and good agronomic performance. The protocols for sampling roots and quantifying carotenoids have been improved. Recently, NIR predictions began to be used. Retention of carotenoids after different root processing methods has been measured. Bioavailability studies suggest high conversion rates. Genetic modification has also been achieved with mixed results. Carotenogenesis genes have been characterized and their activity in roots measured.

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Section: Inheritance Of Carotenoids Content In Cassava Rootsmentioning

confidence: 69%

Carotenoids in Cassava Roots

Ceballos¹,

Davrieux²,

Talsma³

et al. 2017

Carotenoids

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“…However, severities of CGM across the genotypes were relatively low [18,19]. It is a fundamental knowledge in crop science that crop growth has positive and significant relationship with yield [20,21] however; trend in disease severity and tuber yield differed. All the genotypes recorded high yield per hectare.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of High Beta Carotene Cassava Genotypes at Advanced Trial in Nigeria

Edoh¹,

Adiele²,

Ndukwe³

et al. 2016

Open Conf. Proce. J.

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Thirteen cassava genotypes were evaluated from advanced field trial for total carotene content (TCC), % dry matter content (DMC), fresh root yield (FRY) and biotic stresses alongside two widely cultivated cassava varieties (UMUCASS 36 and TMS 30572) as checks in 2013/2014 cropping season at research station of National Root Crops Research Institute (NRCRI) Umudike in Nigeria. The objective of the experiment was to select promising clones for possible release to Nigeria farmers. The results of the TCC analysis ranged from 1.68-10.16 µg/g. Genotypes NR11/0063, NR11/0123 and NR11/0140 had TCC ranged from 10.47-8.72 (µg/g) which are above the national checks (UMUCASS 36 and TMS 30572) of 8.34 and 1.68(µg/g) respectively. The DMC of the genotypes ranged from 33.0-15.0 %. TMS 30572 gave the highest DMC (33.0%) while genotype NR11/0064 had the least (15.0%) DMC. Severity of cassava mosaic disease (CMD), cassava bacterial blight (CBB), cassava green mite (CGM) and cassava anthracnose disease (CAD) evaluated for 12 months varied among the genotypes. Symptom expressions of CMD, CBB and CAD were relatively higher (3.0) for genotype NR11/0123 and this resulted to low fresh root yield (FRY) of 18 t/ha whereas TMS 30572 with moderate severity (1.8) had a higher FRY of 32.6 t/ha. The severity of CGM was moderate across the genotypes with no significant difference (P<0.05) observed. Further analysis showed that CMD, CBB and CAD were significantly correlated (r=0.618, 0.699 and 0.621, p<0.05) with harvest index (HI) among the genotypes evaluated. Three genotypes were selected for further evaluation and possible release to Nigeria farmers.

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“…Effects from genotype and environment that showed highly significant mean square reflected genotypic differences towards adaptive to different environments, thus, the highly significant G × E effects for fresh root yield suggest that clones may be selected for adaptation to specific environment (Aina et al, 2009). It also suggests that, there is the need for multi-environmental testing to identify good performers for specific environments (Akinwale et al, 2011;Maroya et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Performance of nine cassava (Manihot esculanta Crantz) clones across three environments

Boakye¹

2013

J. Plant Breed. Crop Sci.

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The study was carried out to quantify the genotype × environment interaction (G × E) and to estimate the phenotypic stability by genotype genotype × environment (GGE) biplot of nine cassava clones comprising 5 hybrids, 3 parent checks and 1 improved variety. The study was planted across three different environments; Fumesua, Pokuase and Ejura representing forest, coastal savanna and forest transition zones, respectively. Genotype main effect was significant (P < 0.001) for fresh root yield and dry matter content, G × E interaction effect was significant (P < 0.001) for fresh root yield only and environment main effect was significant (P < 0.01) for only fresh root yield. The most stable clone for fresh root yield with above average performance was La02/026 (hybrid). The high genotype and low environment effects, and the relatively low interaction on dry matter content imply that evaluation and selection can be effectively done in fewer environments to select clones with high performance for the trait whiles fresh root yield requires multiple environments to identify clones with broad and specific adaptation.

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Genotype × Environment Interaction of Mosaic Disease, Root Yields and Total Carotene Concentration of Yellow-Fleshed Cassava in Nigeria

Cited by 26 publications

References 12 publications

Carotenoids in Cassava Roots

Carotenoids in Cassava Roots

Evaluation of High Beta Carotene Cassava Genotypes at Advanced Trial in Nigeria

Performance of nine cassava (Manihot esculanta Crantz) clones across three environments

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