Coordination of high grain yield and high nitrogen use efficiency through large sink size and high post-heading source capacity in rice

Huang, Liying; Yang, Desheng; Li, Xiaoxiao; Peng, Shaobing; Wang, Fei

doi:10.1016/j.fcr.2019.01.005

Cited by 72 publications

(45 citation statements)

References 54 publications

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“…According to the results of simulation, the enhanced RI daily was mainly achieved by faster growth rate of green leaf area (e.g., smaller t m and larger C m ) given that no significant difference exists in the values of light extinction coefficient (k) between cultivars or N rates. Similar values of k demonstrate that the canopy structure of these two cultivars showed little difference, and previous studies also reported that prevailing rice cultivars are close to the optimum canopy structure due to the ideotype approach [6,19,34]. Furtrher, many studies have shown that k was not influenced by nutrition status, such as nitrogen and phosphorous deficiency [15,35].…”

Section: Ri Acc or Rue: What Contributed More To Greater Biomass Accusupporting

confidence: 74%

“…Katsura et al [18] reported that high rice yield potential was mainly achieved by intense RI acc . Huang et al [19] indicate that higher RUE rather than RI acc contributed more to yield improvement. This inconsistency may be explained by different cultivars used, various nutrition status.…”

Section: Introductionmentioning

confidence: 99%

“…The most crucial growth stage related with rice grain yield varied due to genotypic variation or environmental effects. A number of studies indicated the importance of biomass production after heading [19,21], but Katsura et al [18] stressed the importance of a higher growth rate during two weeks before full heading. Therefore, it is necessary to elucidate the most crucial growth stage related with rice yield as well as gain further understanding of the relative contribution of RIacc and RUE to yield improvement of "super" rice.…”

Section: Introductionmentioning

confidence: 99%

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Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

et al. 2020

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To reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. The average grain yield of YLY across nitrogen fertilizer rates was 10.1 t ha−1 in 2016 and 9.7 t ha−1 in 2017, 29.6% and 21.3% higher than that of ZD in 2016 and 2017, respectively. YLY showed higher above-ground biomass accumulation, especially growth before heading, which was mainly due to its faster green leaf area index (GLAI) formation and greater maximum GLAI (GLAImax). The daily radiation interception (RIdaily) was 15.0% higher in YLY than ZD, but the accumulated radiation interception (RIacc) before heading showed little difference between them because ZD had a longer growth duration. The radiation use efficiency (RUE) of YLY before heading was 54.7% higher than that of ZD (YLY, 2.12 g MJ−1; ZD, 1.37 g MJ−1). Our result demonstrated that the yield advantage of YLY was due to its higher above-ground biomass before heading, which was mainly achieved by its improvement in RUE rather than radiation interception.

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Section: Ri Acc or Rue: What Contributed More To Greater Biomass Accusupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

et al. 2020

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“…The modification of leaf morphology optimizes canopy structure to allow a more uniform light distribution within the canopy (Long et al., 2015). This led to higher light penetration into the canopy (a lower K , light extinction coefficient) and more synergetic distribution of light and N within the canopy (Huang, Yang, Li, Peng, & Wang, 2019). A study on soybeans ( Glycine max ; Koester, Nohl, Diers, & Ainsworth, 2016) highlights that daily carbon gain was greater in more recently released varieties, despite observing little improvement in the maximum photosynthetic capacity of this crop.…”

Section: Introductionmentioning

confidence: 99%

The coordinated increase in stomatal density and vein dimensions during genetic improvement in rice

Boer

Zixiao

et al. 2020

Agronomy Journal

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Rice (Oryza sativa L. ssp. indica) has experienced three distinct phases of considerable yield increases: Green Revolution, utilization of heterosis, and the combination of ideotype and inter‐subspecific hybrid breeding. Crop breeding and selection for high yield have increased radiation use efficiency in modern indica rice varieties. However, the underlying leaf morphological and physiological changes have not been established. Field and pot experiments were conducted in 2016 and 2017. We investigated the relationships between the anatomical maximum stomatal conductance (gmax), operational stomatal conductance (gop), and the anatomy of the stomata and vein in relation to leaf‐level transpiration and photosynthesis across historical indica rice varieties. The results showed that flag leaf temperature of new varieties was reduced relative to the temperature of older varieties due to increased gop and leaf transpirational cooling. Both high stomatal density and larger veins were increased in new varieties with improved yield potential, while no change was observed in stomatal length and vein density. There was a significant correlation between stomatal density and gop as well as between gop and the light‐saturated photosynthetic rate. The present study reveals that historical selection for high yield is accompanied by leaf morphological changes that contribute to enhanced gop, leaf cooling, and photosynthesis of irrigated rice inhabiting hot, high light environments.

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“…Recent research has revealed that high-yield populations of rice must be high-efficiency populations after flowering, and that the photosynthetic productivity of the rice was the primary factor affecting its yield [25][26][27]. The Sichuan Basin has low-sunlight levels and high humidity, and the post-anthesis populations are often shaded, poorly ventilated, and light-transmissive, which leads to reduced accumulations of photosynthetic products after anthesis and accumulations of post-anthesis photosynthetic products among the rice groups with different yield levels.…”

Section: Optimal N Management During the Rice Season And N Applicatiomentioning

confidence: 99%

Improving Rice Yields and Nitrogen Use Efficiency by Optimizing Nitrogen Management and Applications to Rapeseed in Rapeseed-Rice Rotation System

Liu

Lyu

et al. 2020

Agronomy

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This investigation aims to provide theoretical and practical evidence for the efficient utilization of nitrogen (N) in paddy-upland rapeseed-rice rotation systems because a lack of previous research on such rotation systems leads to inefficient management practices. The effects of the N application rates and the N fertilizer management strategies for rapeseed and rice were examined, respectively, in relation to the photosynthetic productivity and yields of hybrid rice. The results indicated that the leaf area, Pn, with 40% as basal fertilizer, 40% as tillering fertilize, and 20% as panicle fertilizer and a reduced N rate (30 kg/ha) during the rape season, were higher than other nitrogen management strategies trialed, with conventional N rates in the rape season. The average rice grain yield (9545.15 kg/ha) over the two years with 40% as basal fertilizer, 40% as tillering fertilizer, and 20% as panicle fertilizer was higher than other N treatments with the reduced N rates during the rape season. The reduced N rate during the rapeseed season and 40% as basal fertilizer, 40% as tillering fertilizer, and 20% as panicle fertilizer management during the rice season for the rape-rice rotation system exhibited the highest rice yields. Our findings indicated that the N fertilizer management model was a high-yielding, N-saving, and environmentally friendly measure for rape–rice rotation systems in southern China.

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Coordination of high grain yield and high nitrogen use efficiency through large sink size and high post-heading source capacity in rice

Cited by 72 publications

References 54 publications

Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

The coordinated increase in stomatal density and vein dimensions during genetic improvement in rice

Improving Rice Yields and Nitrogen Use Efficiency by Optimizing Nitrogen Management and Applications to Rapeseed in Rapeseed-Rice Rotation System

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