Identification and characterization of high‐yielding, short‐duration rice genotypes for tropical Asia

Won, Phyo L.P.; Liu, Hongyan; Banayo, Niño P.M.C.; Peng, Shaobing; Islam, Mohammad Rafiqul; Cruz, Pompe Sta.; Collard, B. C. Y.; Kato, Yoichiro

doi:10.1002/csc2.20183

Cited by 14 publications

(18 citation statements)

References 25 publications

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“…Similarly, chlorophyll and leaf area are crucial in determining the yield (Lu et al, 1994;Anyia, 2004;Kikuchi et al, 2017;Won et al, 2020), as higher densities of chlorophyll per unit leaf area have been observed in thicker leaves, enhancing the photosynthetic capabilities (Craufurd et al, 1999) of plants resulting in the vigorous and productive crop. Overall, our results suggested that the group 1 and 4 rice genotypes are associated with better photosynthetic efficiency and high iWUE, which can be selected for biomass improvement (Placido et al, 2013;Vikram et al, 2016).…”

Section: Leaf Gas Exchange and Physiological Traitsmentioning

confidence: 99%

“…The 74 genotypes showed significant variability in days to heading (DH), which is a useful trait because early heading lines mature earlier (Won et al, 2020). Sixteen of the 74 genotypes flowered earlier than control entry Rex.…”

Section: Agro-morphological Phenotypementioning

confidence: 99%

“…The bottom 10% of the HI genotypes were mostly long-duration genotypes which produced an average of 164.5 spikelets per panicle, which is 57.4% greater than the top 10% of high HI genotypes. Although spikelet number per panicle is correlated with yield, numerous spikelets per panicle might have to fight for nonstructural carbohydrates or concurrent photo assimilation during grain filling (Peng et al, 2008;Won et al, 2020). This becomes a bottleneck in high-yielding genotypes (Kikuchi et al, 2017;Fabre et al, 2020).…”

Section: Yield Potential Of Long Duration Rice Genotypes Under Non-stress Conditionsmentioning

confidence: 99%

“…Rice producers in the USA prefer short-to medium-duration genotypes, which enable mechanized harvesting. Despite, the increase in demand for short-duration rice genotypes, physiological and genetic improvement has been slow (Won et al, 2020). The lack of stable, high-yielding short-duration varieties would soon becoming a major limitation in achieving maximum yield potential in the USA rice production system.…”

Section: Introductionmentioning

confidence: 99%

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

Kakar

Bheemanahalli

Jumaa

et al. 2021

PeerJ

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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.

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Section: Leaf Gas Exchange and Physiological Traitsmentioning

confidence: 99%

Section: Agro-morphological Phenotypementioning

confidence: 99%

Section: Yield Potential Of Long Duration Rice Genotypes Under Non-stress Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

show abstract

“…It should be noted that for the rice crop, results showed that correlation between the beginning of flowering and grain yield depended on the climate conditions (Won et al, 2020). For most species, the beginning of flowering, though of high heritability, is highly affected by the environment, especially temperature and precipitation (Lizarazo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

IS IT POSSIBLE TO OBTAIN SHORT CYCLE COMMON BEAN (Phaseolus Vulgaris L.) LINES WITH GRAIN

Marques¹,

Abreu²,

Ramalho³

2021

FPBJ

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The cycle of the common bean crop is shorter than that of other species. Nevertheless, in Brazil, researchers have been attempting to shorten the cycle even more to allow three crops a year and obtain greater flexibility in crop management. The aim of this study was to investigate the viability of selecting lines with a shorter cycle and that have good grain yield coming from the same segregating population. To that end, crosses were made between a short cycle and normal cycle cultivars. In the F2 and F2:3 generations, progenies were separated into two groups based on short or normal cycle. After that, the progenies selected were evaluated in the F2:4 and F2:5 generations for grain yield, cycle, and yield per day. The mean of the short cycle progenies was 15% lower for grain yield and 10% lower in yield per day in relation to the normal cycle progenies. Furthermore, selection of lines among those of short cycle that have grain yield equivalent to the best normal cycle lines is of very low probability.

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Improving rice yield and water productivity in lowland rice systems: A global meta‐analysis exploring the synergy of agro‐ecological practices and water management technologies

Sounon Orou,

Adjogboto,

Zakari

et al. 2024

Irrigation and Drainage

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This meta‐analysis evaluated the impact of agro‐ecological practices and water management techniques on lowland rice yield and water productivity (WP). A total of 573 observations were collected from 56 articles that met specific criteria from 445 publications. Five water management practices were assessed: continuous flooding (CF), soil saturation (SS), moderate (AWDm) and severe (AWDs) alternate wetting and drying, and the aerobic rice system (ARS). The response ratios (RRs) of yield and WP were compared for crop management, soil fertility, weed control and evaporation. The integration of agro‐ecological practices such as short‐cycle rice varieties, crop rotation, organic nutrient application and mechanical weeding with water management led to similar yields across CF, SS, AWDm and AWDs, with ARS consistently yielding the lowest yields. However, medium‐ and long‐cycle varieties under AWDs experienced yield losses of 11 and 13%, respectively. Mineral fertilizer combined with AWDs resulted in a 14% lower yield than did CF. Mechanical weeding increased the rice yield and WP by 10 and 10% in SS, and only WP by 35% in AWDs, whereas chemical weeding decreased the yield by 13% in AWDs. Crop rotation enhanced yield and WP by 13 and 12%, respectively, under AWDm compared to that under CF. WP was greater under AWDs (36%) and AWDm (12%) than under CF.

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Identification and characterization of high‐yielding, short‐duration rice genotypes for tropical Asia

Cited by 14 publications

References 25 publications

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

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

IS IT POSSIBLE TO OBTAIN SHORT CYCLE COMMON BEAN (Phaseolus Vulgaris L.) LINES WITH GRAIN

Improving rice yield and water productivity in lowland rice systems: A global meta‐analysis exploring the synergy of agro‐ecological practices and water management technologies

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