Genetic parameters and combining ability of some important traits in rice (Oryza sativa L.)

Alireza, Hasanalideh Haghighi; Farshadfar, Ezatollah; Allahgholipour, Mehrzad

doi:10.2298/gensr1703001h

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…The similar low and high heritability of panicle and yield related traits were observed by Gunasekaran et al (2020), Haghighi et al (2017) and Bassuony and Zsembeli (2021). The Vr-Wr graph showed that, for the number of spikelets per panicle, the number of filled grains per panicle and the number of secondary branches per panicle, the regression line passed above the origin, proving that these traits were governed by partial dominance and for grain yield per plant the regression line passed below the origin showed the existence of over dominance effect (Fig.…”

Section: Resultssupporting

confidence: 68%

Assessment of genetic components and heterotic potential for panicle and yield related traits in rice (Oryza sativa L.)

2022

EJPB

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Rice (Oryza sativa L.) is the staple food crop and it is cultivated under diverse ecological conditions. Understanding genetic effects and identifying superior hybrids are important steps in rice breeding to enhance yield. Six parents with varying numbers of grains per panicle were subjected to full diallel mating. Hayman's graphical approach was applied to compute various genetic parameters and better parental, mid parental and standard heterosis for panicle and yield related traits. The results revealed that, grain yield per plant and panicle related traits were governed by both additive and non-additive effects but the additive component was predominant for the number of filled grains per panicle and non-additive for grain yield per plant. The number of spikelets per panicle, the number of filled grains per panicle and the number of primary branches per panicle were mainly governed by recessive alleles present in the parents. The overdominance effect was found in the number of productive tillers, flag leaf area, panicle length, the number of primary branches per panicle, length of primary branches, thousand grain weight and grain yield per plant. The Vr-Wr graph depicted that the number of spikelets per panicle, the number of filled grains per panicle and the number of secondary branches per panicle were governed by partial dominance and grain yield per plant had over dominance effect and the low grain number parents, IET 28835 and ADT (R) 48 possessed more number of dominant alleles than other parents for all these traits. The promising cross combination BPT 5204 × CB12132 and its reciprocal hybrid exhibited high mid parental and standard heterosis for important panicle traits were adjudged as promising hybrids.

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Section: Resultssupporting

confidence: 68%

Assessment of genetic components and heterotic potential for panicle and yield related traits in rice (Oryza sativa L.)

2022

EJPB

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“…2021, 25(3): 7-25 Issn 0188789-0 genes con efectos dominantes; además, está positivamente correlacionado con caracteres como el largo, ancho, la relación largo/ancho y grosor de grano (Huang et al, 2013). Haghighi et al (2017), encontraron diferencias significativas según el cálculo de HCG y HCE para las variables productividad, granos por panícula, peso de 1 000 granos, panículas por planta, contenido de amilosa y consistencia gelatinosa del grano, resultados que concuerdan con lo obtenido en la presente investigación, donde las variables granos por panícula, peso de 1 000 granos y panículas por planta fueron significativas y presentaron variación entre parentales y cruces.…”

Section: Determinación De La Heterosis Media Obtenida En Los Híbridos...unclassified

Evaluación de tolerancia a Pyricularia oryzae en híbridos de arroz obtenidos bajo cruzamientos dialélicos

Cambronero¹,

Orozco²

2022

Rev AIA

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Objetivo: evaluar la tolerancia de 14 híbridos de arroz a P. oryzae bajo las condiciones de producción de la región Pacífico Central de Costa Rica. Materiales y métodos: se obtuvo la semilla realizando un bloque de cruzamientos en el que se utilizaron cinco parentales con tolerancia a P. oryzae. Además de la tolerancia al hongo, cuantificada en escala de severidad, se midieron variables de interés agronómico como altura de planta (cm), panículas por planta, granos por panícula, granos llenos por panícula, granos vanos por panícula y peso de 1 000 granos (g), todas ellas siguiendo el protocolo de medición estándar IRRI para arroz. Resultados: el cruce 3x1 mostró alta tolerancia a P. oryzae (p<0.05). Para el análisis de habilidad combinatoria específica (HCE), los cruces 3x1, 3x2 y 3x4 presentaron los valores de mayor tolerancia al hongo, así como de la mayoría de componentes del rendimiento. Para la heterosis media (HM), los cruces 3x1 y 3x4 fueron los que presentaron mayor tolerancia a P. oryzae, así como para los componentes de rendimiento. Finalmente, al analizar la habilidad combinatoria general (HCG), se encontró un patrón donde los híbridos, en los cuales se utilizó como progenitor al parental 3, fueron los que presentaron la mayor tolerancia al hongo. Conclusión: se determinó que el parental 3 es un progenitor promisorio, así como los cruces derivados de éste, tanto a nivel aditivo como no aditivo.

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“…Rice is the second important crop in the world consumed by half of the world's population (Haghighi et al, 2017). FAO estimates revealed that world rice production in 2011 was 720 million tonnes and global production in 2025 should reach 800 million tonnes to meet global consumption (FAO, 2010).…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Diallel and NCIII Mating Designs to Estimation of Gene Effects and Genetic Parameters in Rice (Oryza sativa L.)

Hasanalideh¹,

Farshadfar²,

Allahgholipour³

2019

Agric. J.

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Genetic parameters of some characters in rice evaluated with the use of two mating design: diallel and NCIII. Analysis of variance showed significant differences among genotypes for all studied traits in diallel and north NCIII mating design. The results of genetic parameter estimations for diallel mating design revealed the existence of additive-dominance effects in controlling studied traits. Relatively high broad sense heritability observed in Kernel Length (KL) and Final Viscosity (FV) trough diallel mating. The results of genetic parameter estimations for NCIII mating design showed the presence of additive-dominance effects in controlling of all studied traits. This results also indicated that the character's day to 50% of flowering (DTF) and FV controlled by over-dominance of gene effect. Broad-sense heritability was high for all traits and it had highest amount in KL through NCIII. The results of genetic parameters estimation of NCIII mating design approved results of diallel crossing method for FV in the existence of additive-dominance gene effects. Also, for DTF, the results of genetic parameters estimation through NCIII mating design confirmed results of diallel mating design. But it didn't apply for KL. Due to the lack of consistent conform of estimates for some traits, full following to the results of diallel designs will not lead to selecting good traits and effective breeding methods. Thus, according to the results of this study it suggested that the decision to select a breeding method for desirable traits based on the type of gene actions, made by using biparental progeny designs.

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Genetic parameters and combining ability of some important traits in rice (Oryza sativa L.)

Cited by 4 publications

References 11 publications

Assessment of genetic components and heterotic potential for panicle and yield related traits in rice (Oryza sativa L.)

Assessment of genetic components and heterotic potential for panicle and yield related traits in rice (Oryza sativa L.)

Evaluación de tolerancia a Pyricularia oryzae en híbridos de arroz obtenidos bajo cruzamientos dialélicos

Efficiency of Diallel and NCIII Mating Designs to Estimation of Gene Effects and Genetic Parameters in Rice (Oryza sativa L.)

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