Morphological Traits as Selection Indices in Rice: A Statistical View

Dutta, Pallabi; Dutta, Partha Nath; Borua, P. K.

doi:10.13189/ujar.2013.010308

Cited by 33 publications

(17 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the heritability values, the estimated coefficient of genetic variability (CGV) values was a narrow criteria for plant height and maturity, moderate for panicle length, the number of productive tillers, and yield per plant, while broad for the trait, number of filled grain per panicle, which indicated that environmental effects were smaller in expressing these characters, especially for the traits with moderate and board criteria of CGV. The inheritance that is controlled more by genetic factors will make it easier to identify these characters during the selection in rice populations (Roy and Shil, 2020) and these traits could be improved through further breeding and selection (Dutta et al, 2013;Girma et al, 2018). The population with greater genetic diversity had greater opportunity to obtain the desired characters in rice (Ndjiondjop et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Genetic Analysis of Upland Rice F4 Populations (Sileso × Ciherang) for Phenological and Yield Related Traits

SYUKRI¹,

MURDIANI²

2022

SABRAOJBG

View full text Add to dashboard Cite

Climate change increases the drought-affected areas, which challenge the breeders to develop adaptive and drought-tolerant rice cultivars. The study aimed to determine heritability, and gene action controlling of various traits in upland rice F4 populations derived from the cross, Sileso (high yielding and drought tolerant) × Ciherang (early maturing), and to obtain high-yielding and early-maturing rice lines. The upland rice F4 populations, along with parental and check cultivars, were planted in augmented design from July to November 2021 at the Faculty of Agriculture, Samudra University, Langsa, Indonesia. Analysis of variance showed significant differences among the check cultivars for the traits, such as, panicle length, productive tillers, filled grains per panicle, and grain yield per plant. The F4 population families revealed significant differences for the maturity, filled grain per panicle, and grain yield per plant, which confirmed greater genetic diversity, and proved potential to produce the best lines. The check vs. family interactions also exhibited significant differences for all the characters. Results revealed high heritability for the traits, i.e., maturity, filled grain per panicle, and grain yield per plant. The inheritance of all the characters was controlled by the additive gene action. Inheritance of the majority of the traits was polygenic except plant height and productive tillers. The selected and promising upland rice F4 populations revealed reduced plant height, maturity, and increased yield per plant compared with its rice parental cultivar ‘Sileso’.

show abstract

Section: Discussionmentioning

confidence: 99%

Genetic Analysis of Upland Rice F4 Populations (Sileso × Ciherang) for Phenological and Yield Related Traits

SYUKRI¹,

MURDIANI²

2022

SABRAOJBG

View full text Add to dashboard Cite

show abstract

“…Panicles per hill of rice is a major determinant for panicle production and as a result, it affects total yield. The genotypes, which produced a higher number of panicles per plant showed higher grain yield in rice (DUTTA et al, 2013). The genotypes with more tillers showed a better productive tiller per plant.…”

Section: Mean Performancementioning

confidence: 91%

Genetic variability, heritability and interrelationship in salt-tolerant lines of T. Aman rice

2022

View full text Add to dashboard Cite

Twenty salt-tolerant breeding lines of T. Aman rice were studied under field conditions at the experimental farm of the Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh. The experiment was conducted following Randomized Complete Block Design (RCBD) with three replications to estimate the genetic variations in yield and yield-related traits, and their interrelationship and to assess the direct and indirect effects of different yield-related traits on grain yield for the selection of high-yielding T. Aman rice. Twelve characters viz., days to flowering, days to maturity, plant height (cm), tillers per hill, panicles per hill, flag leaf length (cm), panicle length (cm), panicle weight (g), filled grains per panicle, spikelet fertility percentage, 100-grain weight (g) and grain yield per m2 (kg) were studied. The genotypes differed significantly for all the traits studied indicating the wide range of variations existed across the genotypes. The analysis of variance of all characters studied was highly significant that revealed a wide range of variability among the newly developed 20 salt-tolerant genotypes of T. Aman rice. The genotypes BU1, BU4, BU6, BU7, and BU14 had high grain yields and could be directly selected as high-yielding varieties. Based on all genetic parameters, all the traits could significantly improve the grain yield of salt-tolerant lines of T. Aman rice. The correlation coefficient revealed that the genotype selected based on days to flowering, days to maturity, plant height (cm), panicles per hill, flag leaf length (cm), panicle weight (g), filled grains per panicle, and spikelet fertility (%) and 100-grain weight directly would significantly contribute to grain yield of 20 salt-tolerant genotypes of T. Aman rice. However, considering the genotypic correlations and path coefficients, direct selection on the basis of panicles per hill, panicle weight, plant height, flag leaf length, filled grains per panicle, spikelet fertility (%), days to flowering, and days to maturity would significantly improve the grain yield of salt-tolerant T. Aman rice genotypes.

show abstract

“…High tillering capacity is associated with the maximum use of space and resources; thus, this trait significantly affects total grain yield. Full-size  DOI: 10.7717/peerj.11752/fig- 4 Mainly, genotypes with a higher number of effective tillers per plant produce higher rice grain yields (Dutta, Dutta & Borua, 2013).…”

Section: Agro-morphological Phenotypementioning

confidence: 99%

“…Direct selection of yield-related traits, which are easier to measure precisely than yield itself, have been used as an effective strategy for yield improvement (Mehetre et al, 1994;Samonte, Wilson & McClung, 1998;Kumar et al, 2014). Thus, improving yield-related physiological or correlated traits has become a primary objective for rice improvement over the years under non-stress conditions (Dutta, Dutta & Borua, 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessment of agro-morphological, physiological and yield traits diversity among tropical rice

Kakar

Bheemanahalli

Jumaa

et al. 2021

PeerJ

View full text Add to dashboard Cite

Rice (Oryza sativa L.) is an essential staple food crop, but the per acre average rice yield is less than its substantial potential in many countries. Rice breeders and growers would benefit from a robust genotypes with better morpho-physiological and yield-related traits. Here, seventy-four new rice genotypes were phenotyped over two years for their gas exchange and yield potential-related traits under Mississippi rice-growing conditions. A wide range of variability was observed among genotypes for all measured traits. Detailed phenotyping of rice genotypes revealed two key relationships that function together to contribute to yield potential under the southern US climate. The first one, grain yield, grain number, and spikelet fertility, showed considerable correlation (r = 0.45 to 0.79, p < 0.001) to harvest index. Conversely, days to anthesis had a high and negative correlation with harvest index (r = −0.79, p < 0.001), which suggests that selection for short duration genotypes with efficient partitioning could improve the yields under southern US climatic conditions. Additive response index revealed a higher positive association with yield traits (R2 = 0.59) than physiological (R2 = 0.28) and morphological traits (R2 = 0.21). Compared with the commercial genotype Rex, 21.6% and 47.3% of the rice genotypes had a higher gas exchange and yield response scores. IR08A172, IR07K142 and IR07F287 were ranked as high performers in physiological and yield response indices. Our study highlights that selection for short-duration yield-related traits with efficient sink capacity traits is desirable for future breeding programs.

show abstract

Morphological Traits as Selection Indices in Rice: A Statistical View

Cited by 33 publications

References 25 publications

Genetic Analysis of Upland Rice F4 Populations (Sileso × Ciherang) for Phenological and Yield Related Traits

Genetic Analysis of Upland Rice F4 Populations (Sileso × Ciherang) for Phenological and Yield Related Traits

Genetic variability, heritability and interrelationship in salt-tolerant lines of T. Aman rice

Assessment of agro-morphological, physiological and yield traits diversity among tropical rice

Contact Info

Product

Resources

About