Correlation Analysis of Flag Leaf with Yield in Several Rice Cultivars

Rahman, A.; Haque, M. E.; Sikdar, Biswanath; Islam, Asadul; Matin, Muhammad Nurul

doi:10.3329/jles.v8i0.20139

Cited by 40 publications

(29 citation statements)

References 13 publications

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“…This is an important leaf structural trait, which determines the yield capacity of rice. It is positively correlated with PN largely because of a high Chl content in thicker leaves (Rahman et al 2013). Our results showed significant positive associa tion of leaf thickness with PN in both populations.…”

Section: Marker-trait Associationsupporting

confidence: 57%

“…There is a significant positive association between leaf structural traits and physiological traits (Giuliani et al 2013). In general, leaf thickness has a positive association with photosynthesis because of a high Chl content in thicker leaves (Rahman et al 2013) that directly affects the crop biomass (Shen 1980, Chen et al 1995 and grain yield (Xu and Shen 1994). Unlike stomata, mesophyll is also an important decisive factor in rice photosynthesis as 90% of chloroplasts are located there.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

Guttikonda¹,

Vishnukiran²,

Rao³

et al. 2019

Photosynt.

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Photosynthesis is one of the fundamental processes influencing crop growth and productivity. In order to understand better the basis of variation in net photosynthetic rate (PN) and yield potential in rice, two backcross populations derived from Swarna × O. nivara were studied. Gas exchange and chlorophyll fluorescence measurements were taken at flowering stage and data on yield traits at harvest. PN was significantly correlated with stomatal conductance, transpiration rate, mesophyll conductance, carboxylation efficiency, yield per plant (YLDP), and dry mass in both populations. Ten introgression lines (ILs) showed higher PN than their parents. IL 230S showed highest PN with increased YLDP than the remaining ILs. Single marker analysis showed RM514 and RM48 was positively associated with PN and YLDP in popA, whereas RM204 and RM122 in popB. The first 4 principal components contributed 92 and 93% to the total genetic variation in each population, respectively.

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Section: Marker-trait Associationsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

Guttikonda¹,

Vishnukiran²,

Rao³

et al. 2019

Photosynt.

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“…The interrelationships of plant height, days to flowering, and day to maturity with the grains per panicle showed a negative direct effect while tillers per hill and flag leaf length to width ratio showed a positive direct effect ( Table 4 ). It was reported by Rahman et al [ 19 ] that the flag leaf area was directly related to the yield components. Also, flag leaves play a significant role in enhancing rice yield because these leaves remain the only source of assimilating during the grain filling stage [ 19 ].…”

Section: Resultsmentioning

confidence: 99%

Genotypic and Phenotypic Relationship among Yield Components in Rice under Tropical Conditions

Oladosu

Rafii

Usman

et al. 2018

BioMed Research International

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The associations among yield-related traits and the pattern of influence on rice grain yield were investigated. This evaluation is important to determine the direct and indirect effects of various traits on yield to determine selection criteria for higher grain yield. Fifteen rice genotypes were evaluated under tropical condition at five locations in two planting seasons. The experiment was laid out in a randomized complete block design with three replications across the locations. Data were collected on vegetative and yield components traits. The pooled data based on the analysis of variance revealed that there were significant differences (p < 0.001) among the fifteen genotypes for all the characters studied except for panicle length and 100-grain weight. Highly significant and positive correlations at phenotypic level were observed in grain weight per hill (0.796), filled grains per panicle (0.702), panicles per hill (0.632), and tillers per hill (0.712) with yield per hectare, while moderate positive correlations were observed in flag leaf length to width ratio (0.348), days to flowering (0.412), and days to maturity (0.544). By contrast, unfilled grains per panicle (-0.225) and plant height (-0.342) had a negative significant association with yield per hectare. Filled grains per panicle (0.491) exhibited the maximum positive direct effect on yield followed by grain weight per hill (0.449), while unfilled grain per panicle (-0.144) had a negative direct effect. The maximum indirect effect on yield per hectare was recorded by the tillers per hill through the panicles per hill. Therefore, tillers per hill, filled grains per panicle, and grain weight per hill could be used as selection criteria for improving grain yield in rice.

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“…Plant leaf is an important organ of photosynthesis. In particular, the uppermost flag leaf has a crucial role in supplying photosynthates to the developing grains [ 27 , 28 ]. Previous studies have demonstrated that grain yield characteristics are positively correlated with flag leaf traits [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

Chlorophyll Composition, Chlorophyll Fluorescence, and Grain Yield Change in esl Mutant Rice

Lin

Guo

Pan

et al. 2018

IJMS

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To evaluate the effect of changes in chlorophyll (Chl) composition and fluorescence on final yield formation, early senescence leaf (esl) mutant rice and its wild-type cultivar were employed to investigate the genotype-dependent differences in Chl composition, Chl fluorescence, and yield characteristics during the grain-filling stage. However, the temporal expression patterns of key genes involved in the photosystem II (PSII) reaction center in the leaves of two rice genotypes were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). Results showed that the seed-setting rate, 1000-grain weight, and yield per plant remarkably decreased, and the increase in the 1000-grain weight during the grain-filling stage was retarded in esl mutant rice. Chl composition, maximal fluorescence yield (Fm), variable fluorescence (Fv), a maximal quantum yield of PSII photochemistry (Fv/Fm), and net photosynthetic rate (Pn) in esl mutant rice considerably decreased, thereby indicating the weakened abilities of light energy harvesting and transferring in senescent leaves. The esl mutant rice showed an increase in the minimal fluorescence yield (F0) and 1 − Fv/Fm and decreases in the expression levels of light-harvesting Chl a/b binding protein (Cab) and photosystem II binding protein A (PsbA), PsbB, PsbC, and PsbD encoding for the reaction center of the PSII complex during the grain-filling stage. These results indicated the PSII reaction centers were severely damaged in the mesophyll cells of senescent leaves, which resulted in the weakened harvesting quantum photon and transferring light energy to PSI and PSII for carbon dioxide assimilation, leading to enhanced heat dissipation of light energy and a decrease in Pn.

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Correlation Analysis of Flag Leaf with Yield in Several Rice Cultivars

Cited by 40 publications

References 13 publications

Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

Genotypic and Phenotypic Relationship among Yield Components in Rice under Tropical Conditions

Chlorophyll Composition, Chlorophyll Fluorescence, and Grain Yield Change in esl Mutant Rice

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