Varietal differences in seed physiological quality of West African rice varieties after dry heat treatment

Adebisi, M. A.; Adeniyi, T O; Ajala, M. O.; Akintobi, D. C. A.

doi:10.4314/naj.v39i1.3283

Cited by 6 publications

(5 citation statements)

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“…Varietal differences in seed germination and emergence of rice have been reported by Lee et al [26], and Adebisi et al [40]. The classification of the genotypes into separate distinct clusters could lead to increase in heterotic effect in cross progenies.…”

Section: Discussionmentioning

confidence: 95%

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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Section: Discussionmentioning

confidence: 95%

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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“…The environmental conditions in storage are very difficult to maintain and highly influenced the period of seed survival (Jyoti and Malik, 2013 temperature and relative humidity delayed seed deterioration process thereby leads to prolong viability period (Mohammadi et al, 2011). Earlier reports by Adebisi et al (2003Adebisi et al ( , 2008b, Esuruoso (2010), Adebisi and Oyekale (2005) and Oni (2012) have utilized probit modelling to predict storage life of soybean, rice, kenaf, okra, and sesame, respectively under ambient humid storage conditions. In this study, the result of PROBIT modelling showed that the seeds maintained its viability, irrespective of the storage time of a period of 240 days.…”

Section: Discussionmentioning

confidence: 99%

Longevity and vigour of pigeon pea (Cajanus cajan (L.) Millsp.) seed stored under humid tropical ambient conditions

Adebisi

Kehinde

Oladipo

et al. 2019

AAS

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Longevity and vigour of pigeon pea (Cajanus cajan (L.) Millsp.) seed stored under humid tropical ambient conditionsAbstract: Seeds of 20 pigeon pea (Cajanus cajan (L.) Millsp.) genotypes were evaluated for seed longevity and vigour under humid ambient conditions. Cleaned seeds of each genotype were packed into a polyethylene bag, the packaged lot was electrically sealed and thereafter placed in a seed store under ambient conditions (30 ºC, RH 75 %). Seed samples were withdrawn at 0, 60, 120, 180 and 240 days after storage for seed quality parameters evaluation. The experiment consisted of two factors which were genotype and storage duration and was a laid out in a completely randomized design with three replications. Data were collected on rate of seed germination, seed viability, seedling length, seedlings fresh mass, seedlings dry mass and seedling vigour index. Data collected were subjected to analysis of variance and significant treatment means were separated using Tukey's HSD test at 5 % probability level. PROBIT modelling was also used to predict the seed longevity of stored pigeon pea. Significant differences were observed in all seed quality attributes evaluated among the 20 pigeon pea genotypes and storage time except seedling fresh mass. Seed quality attributes decreased significantly with increasing storage periods. Genotypes NSWCC-18A, NSWCC-24, NSWC-34 and NSWCC-29A were identified to be superior for most of the seed quality attributes evaluated. PROBIT modelling result revealed that genotype NSWCC-29b had the highest storage life (16.28 months) and the highest storage potentials in terms of seed viability and other seed quality attributes of all seed lots. Dolgoživost in vitalnost semen kajana (Cajanus cajan (L.) Millsp.) shranjenih v vlažnih tropskih razmerahIzvleček: Dolgoživost in vitalnost semen 20 genotipov kajana (Cajanus cajan (L.) Millsp.) sta bili ovrednoteni v vlažnih tropskih razmerah. Očiščena semena vsakega od genotipov so bila shranjena v zaprte polietilenske vrečke, ki so bile nameščene v hrambo semen pod okoljskimi razmerami (30 ºC, RH 75 %). Vzorci semen so bili odvzeti po 0, 60, 120, 180 in 240 dnevih za ovrednotenje parametrov kakovosti. Poskus je bil dvofaktorski, kjer je bil prvi dejavnik genotip, drugi pa trajanje hrambe in je bil izveden kot popolni naključni poskus s tremi ponovitvami. Zbrani so bili podatki o kalivosti semen, njihovi viabilnosti, dolžini sejank, sveži in suhi masi sejank in njihovem vitalnostnem indeksu. Podatki so bili ovrednoteni z analizo variance, poprečja značilnih obravnavanj so bila ločena s Tukeyevim HSD testom pri verjetnosti 5 %. Za predvidevanje dolgoživosti shranjenih semen kajana je bil uporaben PROBIT model. Ugotovljene so bile značilne razlike v vseh ovrednotenih kakovostnih parametrih semen med vsemi 20 genotipi kajana in med časi hrambe, z izjemo sveže mase sejank. Kakovostni parametri semen so se s časom shranjevanja značilno zmanjševali. Genotipi NSWCC-18A, NSWCC-24, NSWC-34 in NSWCC-29A so bili prepoznani kot najboljši v vseh ovrednotenih...

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“…Seed germination, shoot length, seedling vigor index I and II, speed of germination, seedling dry weight, reserve mobilization, superoxide dismutase, dehydrogenase and alpha-amylase had good correlations with mean germination rate; hence they are good predictors of seed emergence in rice varieties. In general, the seed germination characters have been shown to be an excellent predictor of field emergence and seedling vigor (Egli et al 1979;Adebisi et al 2006 andAdebisi 2008) in some crop species. In rice varieties, germinationrelated characters were reported to be highly significant (Subba Rao 1996).…”

Section: Pca Plots Showing Relation Among Various Seed Vigor Traits I...mentioning

confidence: 99%

Assessment of genetic diversity for seed vigor traits in rice (Oryza sativa L.) through principal component and cluster analysis

Kumari,

Chakrabarty,

Paul

2023

IJGPB

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Seed vigor, an important characteristic of seed quality attributes, determines the rate of early, rapid, uniform germination, emergenceand growth of strong seedling in any environmental condition. In the present set of experiment, 44 rice (Oryza sativa L.) varieties wereassessed for different seed vigor component traits. For evaluation of these traits, basic statistics, correlation, principal component (PC) andcluster analysis were carried out to obtain genetic diversity for seed vigor traits and early seedling vigor among rice varieties specifically to select the best varieties and important seed vigor traits for its possible use in future rice breeding programme. The estimation of descriptive statistics of 20 quantitative seed vigor-related traits indicated existence of variability among the varieties. The 44 varieties were grouped into five clusters on the basis of average linkage and dendogram. Varieties in Cluster I are considered to possess very high vigor traits and cluster IV with least seed vigor traits. Principal component (PC) analysis showed first 5 PCs having Eigen value >1 explaining 77.01% of the total variation with different seed vigor traits. In the biplot analysis between PCs 1 and 2, the varieties remained scattered in all four quadrants, showing large genetic variation in quantitative traits. Seed vigor index-I, seed vigor index-II, seed dry weight, shoot length, reserve mobilization, germination percentage, dehydrogenase, mean germination rate, germination speed, and mean germination time contributed to high variability among the varieties. The seed vigor traits were positively correlated with germination percentage, shoot length, seedling dry weight, speed of germination, mean germination rate, reserve mobilization, superoxide dismutase, dehydrogenase and alpha-amylase. The positive correlation among these seed vigor-contributing traits suggested that these characteristics are important for direct selection of high seed vigor varieties and early emergence.

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Varietal differences in seed physiological quality of West African rice varieties after dry heat treatment

Cited by 6 publications

References 0 publications

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

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

Longevity and vigour of pigeon pea (Cajanus cajan (L.) Millsp.) seed stored under humid tropical ambient conditions

Assessment of genetic diversity for seed vigor traits in rice (Oryza sativa L.) through principal component and cluster analysis

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Varietal differences in seed physiological quality of West African rice varieties after dry heat treatment

Cited by 6 publications

References 0 publications

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

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

Longevity and vigour of pigeon pea (Cajanus cajan (L.) Millsp.) seed stored under humid tropical ambient conditions

Assessment of genetic diversity for seed vigor traits in rice (Oryza sativa L.) through principal component and cluster analysis

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

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