Contribution of Biomass Partitioning and Translocation to Grain Yield under Sub-Optimum Growing Conditions in Irrigated Rice

Laza, M.; Peng, Shaobing; Akita, Shigemi; Saka, Hitoshi

doi:10.1626/pps.6.28

Cited by 87 publications

(50 citation statements)

References 25 publications

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“…On the other hand, cultivars with an extremely high number of tillers would have greater consumption of stored materials by excessively bigger sink size (Yoshida and Parao, 1976;Khush and Peng, 1996;Lee and Ha, 1999). Consequently, these stored materials, which are important under a low solar radiation condition (Laza et al, 2003), will be reduced and less will be translocated to the grains. In addition, increases in tiller number cause overgrowth and mutual shading during the vegetative stage (Akita, 1988), which could be detrimental to leaf area index (LAI) and crop growth rate.…”

Section: Discussionmentioning

confidence: 99%

Effect of Panicle Size on Grain Yield of IRRI-Released Indica Rice Cultivars in the Wet Season

Laza

Peng

Akita

et al. 2004

Plant Production Science

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Section: Discussionmentioning

confidence: 99%

Effect of Panicle Size on Grain Yield of IRRI-Released Indica Rice Cultivars in the Wet Season

Laza

Peng

Akita

et al. 2004

Plant Production Science

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“…G rain yields of rice highly vary depending on cropping seasons in the tropics. The two distinct cropping seasons in the tropics are climatically characterized by high solar radiation due to less precipitation and lower atmospheric temperature in dry seasons, compared with wet seasons (Laza et al, 2003). Dry seasons have advantages over wet seasons in terms of yield performance of rice.…”

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confidence: 99%

“…Song et al (1990) and Yamauchi (1994) reported that the high yield of F 1 hybrid was associated with increased biomass production under favorable conditions. Since harvest index is the balance between grain yield and total biomass at physiological maturity, further increase in harvest index under favorable condition is difficult to achieve (Laza et al, 2003). Moreover partitioning of assimilates more to the grains than to the straw may result in the plant lodging, which may severely affect the grain yield and quality of rice.…”

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confidence: 99%

“…With the comparison of high‐ and low‐yielding rice cultivars, Miah et al (1996) stated that high‐yielding varieties had more accumulation of assimilates before heading and greater translocation of these materials during grain filling. Under sub‐optimum or unfavorable conditions, translocation of pre‐stored reserves has been known to be more closely associated with harvest index and grain yield (Yoshida, 1981; Laza et al, 2003).…”

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Yield Gap Analysis between Dry and Wet Season Rice Crop Grown under High‐Yielding Management Conditions

et al. 2008

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Rice (Oryza sativa L.) grain yield highly varies depending on cropping seasons under the tropical irrigated conditions. Th is study aimed to (i) compare the grain yield of rice in dry season (DS) and wet season (WS) and (ii) determine climatic and physiological factors critical to the yield gap between DS and WS. Six genotypes, two each for indica inbred, indica/indica F 1 hybrid, and the second-generation new plant type, were grown in DS and WS of 2003 and 2004. Signifi cantly higher grain yields were achieved in DS than in WS by 94% for 2003 and 35% for 2004. Mean daily radiation was higher in DS than WS, particularly during grain fi lling stage than before fl owering. Th e greater radiation during ripening in DS contributed to the higher grain yield. Major difference in biomass production between DS and WS occurred aft er fl owering. Greater biomass accumulation from fl owering to physiological maturity was associated with higher grain yield in DS than in WS, but not translocation of biomass accumulated before fl owering to grains. Higher grain yield in DS was partly the result of greater spikelets due to higher spikelet production effi ciency per unit biomass at fl owering. Aboveground total biomass at physiological maturity was a crucial physiological factor to the yield gap between DS and WS. Daily mean radiation and biomass accumulation during ripening, and sink production effi ciency per unit biomass were critical factors to the yield gap of rice between DS and WS under the high-yielding tropical irrigated conditions.Abbreviations: DS, dry season; WS, wet season; Wr, biomass accumulated during ripening; T, translocation of the biomass at fl owering to rice grains.

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“…The ultimate effect of accumulation of dry matter is to increase tiller number and vigorous growth over the inbred varieties. It has been suggested that accumulation of higher amount of dry matter before heading stage triggers the translocation of assimilated to the grain filling resulting higher number of filled grain, 1000-grain weight and ultimate yields over the modern and/or inbred varieties (Laza et al, 2003). Grain yield of rice depends on the source-sink relationship (Zhao et al, 2006).…”

Section: Hybrid Varieties Out-yielded the Inbredmentioning

confidence: 99%

Pre-Planting Hardening-Induced Variability in Yield Attributes and Yield of Inbreed and Hybrid Rice

Masrufa

Rahman

Hasanuzzaman

et al. 2016

Bangladesh Agron. J.

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Short term hardening before transplanting may enhance the defence mechanism of rice seedlings against any stress during their establishment and contribute d to enhanced growth and yield. Thus, this study was conducted involving one local inbred (Pajam), one popular high yielding (BRRI dhan53) and one hybrid (BRRI hybrid dhan4) rice variety. The experiment was laid out in randomized complete block design with two factors. Seedlings were transplanted directly to the main field as a control treatment and/or subjected to four different hardenings like seedlings storage in shade, open field under sunlight, float in water and cold air in refrigerator before transplantation. Hybrid variety out yielded both the local and inbred varieties due to their highest effective tillers, longer panicle length and 1000-grain weight. Pre-hardening of seedlings in open field under sunlight conditions enhanced the yield attributes and ultimate yield of rice compare to others. The best combination was pre-hardening seedlings in open field conditions with hybrid cultivar regarding to the yield attributes and final yields. It is suggested that hybrid variety and prehardening of seedlings before transplantation to the main field could be increase the rice yield productions.

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Contribution of Biomass Partitioning and Translocation to Grain Yield under Sub-Optimum Growing Conditions in Irrigated Rice

Cited by 87 publications

References 25 publications

Effect of Panicle Size on Grain Yield of IRRI-Released Indica Rice Cultivars in the Wet Season

Effect of Panicle Size on Grain Yield of IRRI-Released Indica Rice Cultivars in the Wet Season

Yield Gap Analysis between Dry and Wet Season Rice Crop Grown under High‐Yielding Management Conditions

Pre-Planting Hardening-Induced Variability in Yield Attributes and Yield of Inbreed and Hybrid Rice

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