The influence of growth stages on cassava tuberous root rot in different ecological environments

Aigbe, S. O.; Remison, S. U.

doi:10.1080/03235400903145467

Cited by 4 publications

(5 citation statements)

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“…mean rot value of 1.2% obtained in this study is much lower than that by Okechukwu et al (2009) of 7.58% for TMS 97/2205 but higher than that of Aigbe and Remison (2010) of 0.00% for TMS 4(2)1425. The best genotype in the present study was not assessed by Aigbe and Remison (2010) but by Okechukwu et al (2009) and it took 4th position with mean rot of 11.42% and belongs to R class of the six classes. This genotype recorded a 0.00% rot in 8 out of 25 zones as reported by Okechukwu et al (2009) across Nigeria.…”

Section: Variations Of Root Rot Within the Cassava Collectionmentioning

confidence: 51%

“…This genotype recorded a 0.00% rot in 8 out of 25 zones as reported by Okechukwu et al (2009) across Nigeria. The best genotype for rot resistances by Okechukwu et al (2009) and Aigbe and Remison (2010) had mean rot of 2.29 (HR) and 2.90% (R), respectively, in our present study. The differences observed in these values is mainly the result of differences in the number of location(s), which are highly influenced by G X E interactions, as explained by Egesi et al (2007) for yield parameters and diseases in cassava breeding.…”

Section: Variations Of Root Rot Within the Cassava Collectionmentioning

confidence: 51%

“…It was reported to cause about 20 to 80% yield loss (Mskita et al, 2005). Aigbe and Remison (2010) reported that the starch content and quality of garri decreased with increasing incidence or severity of root rot among assessed varieties of cassava. Reported causes of cassava root rot diseases are water logged or flooded soils and microorganisms (fungi and bacteria) that are hydrophilic.…”

Section: Introductionmentioning

confidence: 99%

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Gene diversity and identification of putative hybridizing parents for root rot resistance in cassava using simple sequence repeats

Moyib¹

2012

Int. J. Biotechnol. Mol. Biol. Res.

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The incidence of root rot diseases partly contribute to the currently observed low percentage increase in the yield of cassava. We estimated gene diversities and identified putative hybridizing parents for root rot resistance using 18 simple sequence repeats loci in 43 improved genotypes of cassava. Root rot was measured over 2 years as the percentage proportion of rotten roots to the total number of roots harvested at 12 month after planting. Estimated rot ranged from 1.2 to 21.2% with a mean of 5.7±0.5. Rank-sum analysis generated 8 rot classes and identified TMS 96/1089A as best genotype resistant to root rot. Gene diversity analysis revealed expected heterozygosity that ranged from 0.701 for very highly susceptible genotypes to 0.781 for moderately resistant and susceptible. Genetic differentiation ranged from -0.0178 (resistant and susceptible) to 0.0523 (very highly resistant and highly resistant genotypes). A total heterozygosity of 0.764 was estimated and was largely due to within class diversity (0.755). DNA analysis representatives for window (DARwin) identified 10 hybridizing groups with a dissimilarity coefficient that ranged from 0.18 to 0.81 on a mean of 0.60. The results obtained from the present study are useful for the genetic improvement of cassava against root rot disease.

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Section: Variations Of Root Rot Within the Cassava Collectionmentioning

confidence: 51%

Section: Variations Of Root Rot Within the Cassava Collectionmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 99%

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Gene diversity and identification of putative hybridizing parents for root rot resistance in cassava using simple sequence repeats

Moyib¹

2012

Int. J. Biotechnol. Mol. Biol. Res.

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“…Various ecological environments in different ecological regions will also have a certain impact on quality [ 31 ]. Research has reported that the efficiency of winter wheat agronomic bioaugmentation is affected not only by the amount of Se applied and the method of Se application but also by the climatic conditions and soil environment of the ecological region [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Applying Different Doses of Selenite to Soil and Foliar at Different Growth Stage on Selenium Content and Yield of Different Oat Varieties

Hao

Liu

Qin

et al. 2022

Plants

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(1) Background: With the increase in people’s consumption of processed oat products, the production of selenium (Se)-enriched oat has become a possibility to supplement the human body with Se. Therefore, the effects of various factors on the Se-enriched ability and yield of different oat varieties were comprehensively studied. (2) Methods: cv.“Pinyan 5” and cv.“Bayou 18” were applied at the stem-elongation stage and heading stage in the Jinzhong (JZ), and cv.“Bayou 1” and cv.“Jinyan 18” were applied at the heading stage and flowering stage in the northwestern Shanxi (JXB) with different doses of Na2SeO3 (0, 5.48, 10.96, 21.92, 43.84, 65.76, 98.64, 0, 5.48, 10.96, 21.92, 43.84, 65.76, 98.64, 147.96 g hm−2) by soil application and foliar spraying. (3) Results: The grain Se content and yield of oat were affected by the variety, Se application dose, stage and method of Se supplementation. Additionally, the Se content in oat grain was positively correlated with the Se application dose while the yield of oat first increased and then decreased with the Se application dose. (4) Conclusions: In the JZ and JXB, 21.92 g hm−2 and 43.84 g hm−2 Se was sprayed on the leaves of cv.“Bayou 18” and cv.“Bayou 1” at the heading stage, respectively, was the most effective Se biofortification program.

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“…Furthermore, Nigeria is one of the highest producer of the food crop accounting for 73% of the world production [13]. It has been a raw material for global industrial production of textiles, papers, adhesives, pharmaceuticals and various food products (sugar, fructose syrups, bread, wine, brandy and others) because it is rich in carbohydrate with high energy density and has generated great impact in world economics [14]. However, cyanogenesis in cassava tubers has been a limiting factor in its acceptance, exploitation and utilization which can be complemented by cassava leaves [15].…”

Section: Introductionmentioning

confidence: 99%

Properties of Partially Purified Rhodanese from Leaves of Cassava in Owo Southwestern Nigeria

Adedugbe¹,

Owolala²,

Ilesanmi³

2021

IJBC

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Introduction: Rhodanese is a transferase enzyme that catalyses detoxification of cyanide. Cyanide is popular for its presence in a wide variety of food materials that are consumed by animals especially man. In this work, we investigated the partially purified rhodanese from cassava leaves in order to ascertain its suitability for cyanide detoxification in cassava tuber. Crude rhodanense was subjected to 80% (NH 4 ) 2 SO 4 precipitation, the percentage yield and purification fold obtained was 68% and 4 respectively. The degree of substrate preference was Na 2 S 2 O 3 >2-mercaptoethanol>ammonium persulphate>sodium metabisulfite>sodium sulfite. Apparent K m and V max were 18.2 mM and 13.9 RU/ml respectively. While that of Na 2 S 2 O 3 were 10.9 mM and 5.8 RU/ml respectively. The substrate specificity V max /K m revealed that KCN was a better substrate. The optimum pH and temperature of rhodanese from cassava leaves were 6.0 and 40°C respectively. Result: The information provided by this study can be exploited for understanding cyanide distribution and detoxification of cassava.

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The influence of growth stages on cassava tuberous root rot in different ecological environments

Cited by 4 publications

References 4 publications

Gene diversity and identification of putative hybridizing parents for root rot resistance in cassava using simple sequence repeats

Gene diversity and identification of putative hybridizing parents for root rot resistance in cassava using simple sequence repeats

Effects of Applying Different Doses of Selenite to Soil and Foliar at Different Growth Stage on Selenium Content and Yield of Different Oat Varieties

Properties of Partially Purified Rhodanese from Leaves of Cassava in Owo Southwestern Nigeria

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