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Nair, N. V.; Balakrishnan, R.; Sreenivasan, T. V.

doi:10.1023/a:1008696617524

Cited by 18 publications

(7 citation statements)

References 2 publications

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“…The heritability for millable canes number (88%), stalk diameter (85%), and cane weight (84%) were also reported in sugarcane [19]. Similar results were found for those characters [16, 22]. It indicates that simple selection based on phenotype for these traits might be effective method for sugarcane variety improvement breeding program.…”

Section: Resultssupporting

confidence: 54%

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Genetic Variability of Exotic Sugarcane Genotypes

et al. 2017

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Sugarcane is the main sugar producing crop in Bangladesh. However, improvement of this crop through breeding is limited due to lack of genetic diversity. Therefore, genetic variability and diversity assessment are necessarily important for the foreign introduced materials. Experiment was conducted with 9 exotic sugarcane genotypes at Regional Station, Bangladesh Sugar Crop Research Institute, Gazipur, during 2012-13, following RCBD. Data were collected on different growth and yield contributing characters. Individual cane weight exhibited high genotypic coefficient of variation and phenotypic coefficient of variation. Leaf blade length, leaf blade width, fresh leaf weight, dried leaf weight, number of tillers, millable cane, bud size, cane diameter, internodes number, internode length, plant height, stalk length, brix%, and individual cane weight showed high heritability. Individual cane weight showed highly significant and positive correlation with cane diameter, internode length, and stalk length, whereas path coefficient analysis revealed that cane diameter had maximum positive direct effect on individual cane weight followed by internode length, number of tillers, and chlorophyll content. Results indicate that the genotypes should be selected on the basis of individual cane weight, cane diameter, and millable canes number for future breeding to get higher sugarcane yield in respect to juice and brix content.

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Section: Resultssupporting

confidence: 54%

“…Genetic advance (GA) was estimated accordance to the methods illustrated [10, 16, 17]:

\begin{matrix} T1 \\ G e n e t i c a d v a n c e (G A) = h_{b}^{2} \cdot K \cdot σ_{p}, \end{matrix}

where h b 2 is heritability in broad sense, K = K is the selection differential value which is 2.06 at 5% selection intensity, and σ p is phenotypic standard deviation.…”

Section: Methodsmentioning

confidence: 99%

Genetic Variability of Exotic Sugarcane Genotypes

et al. 2017

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“…These statistical techniques identify plant characters that contribute most to the variation within a group of entries. The methods are often extended to genotype grouping in order to cluster entries that show similarity in one or more characters and thus guide in the choice of parents for hybridization [13,14]. PCA is a technique, which identifies plant characters that contribute most to the variation within a group of entries [15].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Variations in Seed Vigour Characters of West African Rice (<i>Oryza sativa</i> L.) Genotypes Using Multivariate Technique

Adebisi¹,

Okelola²,

Ajala³

et al. 2013

AJPS

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Seeds of 24 West African rice (Oryza sativa L.) genotypes were evaluated for seed vigour traits in the laboratory and field in two cropping seasons at the Research Farm of Federal University of Agriculture, Abeokuta, Nigeria. Seed yields of these genotypes were also determined in the field during the two seasons. Data collected on seed vigour traits were subjected to multivariate analysis including principal component analysis (PCA) and cluster analysis. The first three axes of the principal component analysis across the two seasons captured 86.34% of the total variation among the entries and identified seedling vigour index-I, seedling vigour index-II, speed of germination index, percentage germination, seedling establishment, emergence percentage and seed yield per plant as the characters contributing most to the variation. Cluster analysis classified these genotypes into four distinct groups based on germination and emergence percentages. Fifteen of the genotypes with mean values of between 60.43% and 65.18%, clustered in group 1, two genotypes each with mean values of 65.71% and 58.81% and 20.11% and 29.49% clustered in groups II and IV respectively while the remaining five genotypes with mean values of between 55.19% and 55.88% clustered in group III. Hybridization of genotypes across dusters could lead to increase in heterosis in cross progenies. Those characters identified by PCA could be included in the crop improvement programme for improved seed quality within West African low land rice germplasm.

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“…Breakthrough improvements should therefore focus on two main principles: the discovery and application of new wild resources and expansion of sugarcane kinship, and application of existing core parents or commercial varieties showing excellent performance [43]. The latter is the main approach currently being adopted by Chinese sugarcane breeders, because good parents are more likely to cultivate improved varieties, which is the basis of hybrid crossbreeding [44]. Under the premise that the new blood relationship of sugarcane has not been created yet, full use of high-quality commercial varieties for new cross utilization is one of the most effective methods of conventional breeding.…”

Section: Importance Of Strengthening the Application Of Main Existing...mentioning

confidence: 99%

Improvements in Sugarcane (Saccharum spp.) Varieties and Parent Traceability Analysis in Yunnan, China

et al. 2022

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Sugarcane (Saccharum spp.) breeding in China has a history of nearly 70 years. Yunnan province represents the second largest sugarcane planting area in China; therefore, by studying the evolution of sugarcane varieties in this region, it is possible to gain an understanding of the process of improvement since the foundation of sugarcane hybrid breeding. In this study, we compared the main industrial and agronomical characteristics of 107 sugarcane varieties, developed between 1952 and 2020, and discussed the reasons for replacement and exchange. Overall, significant differences were observed (p < 0.01), highlighting notable improvements, especially in terms of yield; however, disease incidence remains a serious issue and the fundamental reason for variety replacement. Meanwhile, analysis of parent traceability revealed that the main varieties cultivated at present have a similar parental relationship based around CP, F, and YC series germplasms. Taken together, these findings suggest that disease-resistant breeding should be strengthened, and susceptible varieties eliminated, while making full use of existing varieties as core parents.

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Untitled

Cited by 18 publications

References 2 publications

Genetic Variability of Exotic Sugarcane Genotypes

Genetic Variability of Exotic Sugarcane Genotypes

Evaluation of Variations in Seed Vigour Characters of West African Rice (<i>Oryza sativa</i> L.) Genotypes Using Multivariate Technique

Improvements in Sugarcane (Saccharum spp.) Varieties and Parent Traceability Analysis in Yunnan, China

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Untitled

Cited by 18 publications

References 2 publications

Genetic Variability of Exotic Sugarcane Genotypes

Genetic Variability of Exotic Sugarcane Genotypes

Evaluation of Variations in Seed Vigour Characters of West African Rice (&lt;i&gt;Oryza sativa&lt;/i&gt; L.) Genotypes Using Multivariate Technique

Improvements in Sugarcane (Saccharum spp.) Varieties and Parent Traceability Analysis in Yunnan, China

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Evaluation of Variations in Seed Vigour Characters of West African Rice (<i>Oryza sativa</i> L.) Genotypes Using Multivariate Technique