Assessment of Genetic Diversity for Grain Yield and Yield Component Traits in Some Genotypes of Rice (Oryza Sativa L.)

Asante, Maxwell Darko; Adjah, Kossi Lorimpo; Annan‐Afful, Ebenezer

doi:10.1007/s12892-019-0008-0

Cited by 30 publications

(23 citation statements)

References 9 publications

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“…The heritability estimate resulted from this study was high for plant height, heading date, and thousandgrain weight; medium for productive tiller number, total spikelet number per panicle, filled grain number, unfilled grain number and spikelet fertility; and low for grain yield. This results was conformity with the finding of Sohrabi et al 2012 2016for tiller number and thousand-grain weight; and Li et al (1997) and Asante et al (2019) for the grain yield. The low heritability in grain yield indicated that the epistasis might control grain yield (Li et al 1997).…”

Section: Heritabilitysupporting

confidence: 93%

“…The estimated PCV was higher than GCV for all the traits indicating greater environmental influence on these traits for total variation. High GCV and PCV indicated that selection might be effective based on these characters and their phenotypic expression would be a good indication of the genotypic potential (Singh et al2011, Asante et al 2019 The low GCV suggested the low variability for these characters in the present experimental materials and, therefore the little scope for improvement of these traits (resistance to Xoo pathotypes III, VIII, and IV, heading date, spikelet fertility, thousand-grain weight, and grain yield). Introducing the different genetic resources instead of using the existing varieties as donor parents is very crucial.…”

Section: Phenotypic and Genotypic Variabilitymentioning

confidence: 94%

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Genetic Variabilities of Agronomic Traits and Bacterial Leaf Blight Resistance of High Yielding Rice Varieties

Nafisah¹,

Roza²,

Yunani³

et al. 2020

Indones. J. Agric. Sci.

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Hundred of high yielding and bacterial leaf blight (Xanthomonas oryzae pv. oryzae, Xoo) resistant rice varieties released since the 1960s are important sources of genetic materials for exploring superior genotypes. The study aimed to evaluate the genetic resistance of 177 rice varieties to Xoo and their agronomic traits. The evaluations were conducted at the Indonesian Center for Rice Research Experimental Station during the wet season (December 2015-March 2016). The bacterial leaf blight resistance was evaluated for Xoo pathotypes III, IV, and VIII using the clipping method. The genetic variation among genotypes was categorized as low (0–10%), medium (10–20%), and high (>20%), whereas the heritability was categorized as low (0-30%), medium (30-60%), and high (>60%). The variability of resistance to Xoo pathotypes, grain yield, and spikelet fertility was low, while the variability of plant height, productive tiller number, filled grain, and total spikelet was medium, and the variability of unfilled grain number was high. The 29 varieties were categorized as superior based on their agronomic traits or resistance to Xoo pathotypes. In conclusion, Batutegi and Fatmawati were superior in the total spikelet number, while Rojolele and Inpari 2 were supreme in the thousand-grain weight. Dodokan had a very short maturity, and Inpari 24, Conde, Kalimas, Angke, Inpari 17, and Inpara 8 had the highest resistance to Xoo pathotypes. The study implies that the identified rice superior genotypes could be used as genetic materials to design cross combinations for higher yield potential and BLB resistance varietal improvement.

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Section: Heritabilitysupporting

confidence: 93%

Section: Phenotypic and Genotypic Variabilitymentioning

confidence: 94%

Genetic Variabilities of Agronomic Traits and Bacterial Leaf Blight Resistance of High Yielding Rice Varieties

Nafisah¹,

Roza²,

Yunani³

et al. 2020

Indones. J. Agric. Sci.

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show abstract

“…However, the effectiveness and efficiency of selecting varieties are determined by genetic diversity, heritability, and genetic advance of the traits possessed. Therefore, it is important to ensure that traits selected have high genetic diversity and heritability, thereby resulting in favorable genetic advances (Asante et al 2019;Saha et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Heritability and genetic advancement on agronomic characters of Toraja red rice x Inpari-4 white rice genotypes

et al. 2021

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Abstract. Limbongan YL, Driyunitha, Sjahril R, Riadi M, Jamaluddin I, Okasa AM, Panga NJ. 2021. Heritability and genetic advancement on agronomic characters of Toraja red rice x Inpari-4 white rice genotypes. Biodiversitas 22: 3446-3451. Determination of genetic diversity, heritability, and genetic advance on specific agronomic characters of cross-breed red rice genotypes (Toraja red rice Pare Lea’ x Inpari-4) was done in Tallunglipu, North Toraja, South Sulawesi, Indonesia. The experiment was designed using a randomized complete block design. Twenty-one days old seedlings were transplanted following the system of rice intensification practices. Selection was conducted at F2 as a novel method to speed up genetic advancement and ensure progeny production with desired agronomic traits. Results indicated existence of a considerably high level of diversity among genotypes tested, where the highest value for genetic advance was observed in filled-grain weight per hill of F2 plants (983.890), followed by plant height (335.124), and filled-grain weight per hill of F1 (306.645). The highest estimate of broad-sense heritability was recorded in 1000-grain weight (0.915), number of productive tillers (0.788), plant height (0.765), flag leaf length (0.705), filled-grain weight per hill (0.688), and harvest age (0.594). Genetic advance of agronomic characters between genotypes varied from 1.631-38%, where the highest estimate was recorded in filled-grain weight per hill (38%) and plant height (24.648%). The above-mentioned characters could be used for selection in further rice breeding programs to obtain plants with superior genotypes.

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“…However, plant height was found to be positively correlated to yield per plant (r=-0.441; p≤0.01); possibly by having a higher number of grains per panicle, percentage of filled grains, wider flag leaves and prolonged vegetative phase whereby the plants can accumulate more photosynthates for grain filling. Grain yield was also shown to have significant positive association with days-to-flowering and panicle length in rice by other study (Asante et al, 2019).…”

Section: Yield Traits Of Lowland Rice Varietiesmentioning

confidence: 54%

Analyses of yield related agronomic traits of Malaysian rice varieties

Kasim

Teh

Namasivayam

et al. 2020

APJMBB

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Analyses of morphological and agronomic traits not only provide important information in the selection of rice varieties for breeding, these data are also important in deciding plant materials for molecular characterization and analysis of phenotypic traits of interest. The aim of the present study was to collect, analyze and compare the agro-morphological data of 6 upland rice and 17 lowland rice varieties (Oryza sativa L.) from the Malaysian rice germplasms grown under the same greenhouse condition. The common factors that contributed to yield per plant in both upland and lowland rice varieties are plant height and percentage of filled grains. Panicle length was positively correlated to grain yield in upland rice varieties while many other agronomic traits could affect the yield per plant in lowland rice varieties such as total number of tillers, total number of panicles per plant, flag leaf width and days-to-flowering. The upland rice varieties have a slightly higher average total grain number per panicle in compensation of a low number of panicles. The compensation in total grain numbers per panicle was not sufficiently significant to affect the total yield per plant most probably due to a low total number of grains per plant. Despite a high 100-grain weight in general, some of these upland rice varieties have more than 50% percentage of unfilled grains. Data on these rice germplasms may offer information on a valuable gene pool which can be utilized in different varietal improvement/development program in future.

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Assessment of Genetic Diversity for Grain Yield and Yield Component Traits in Some Genotypes of Rice (Oryza Sativa L.)

Cited by 30 publications

References 9 publications

Genetic Variabilities of Agronomic Traits and Bacterial Leaf Blight Resistance of High Yielding Rice Varieties

Genetic Variabilities of Agronomic Traits and Bacterial Leaf Blight Resistance of High Yielding Rice Varieties

Heritability and genetic advancement on agronomic characters of Toraja red rice x Inpari-4 white rice genotypes

Analyses of yield related agronomic traits of Malaysian rice varieties

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