Source-sink regulation and its effects on the regeneration ability of ratoon rice

He, Aibin; Wang, Weiqin; Jiang, Guanglei; Sun, Hong; Min, Jiyoung; Man, Jianguo; Cui, Kehui; Huang, Jikun; Peng, Shaobing; Nie, Lei

doi:10.1016/j.fcr.2019.04.001

Cited by 63 publications

(40 citation statements)

References 31 publications

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“…The relationship between stem carbohydrate levels and ratoon tiller growth was most evident in the postharvest ratoon trials (Figure 4), which is in agreement with previous studies in which stem carbohydrate levels were measured in relation to ratoon growth (He et al, 2019;Turner & Jund, 1993). In the midseason lodging experiments, it may also be implied that stem carbohydrates were an important factor in ratoon tiller growth based on the increased number of ratoon tillers with increased stubble cutting heights and earlier lodging or cutting dates ( Figure 6).…”

Section: Crop Sciencesupporting

confidence: 90%

“…In contrast, plots with no panicle abortion in 2017DS showed that the trimming treatment at 30 cm was more beneficial than trimming at panicle level. Under well-watered conditions, He et al (2019) reported that ratoon tiller growth was reduced by leaf cutting treatments and promoted by panicle removal treatments. The difference in trimming results with the current study may be related to the response of rice to drought stress.…”

Section: Crop Sciencementioning

confidence: 99%

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Ratooning as a management strategy for lodged or drought‐damaged rice crops

et al. 2020

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Rice (Oryza sativa L.) plants have the ability to develop ratoon tillers if the terminal growing point is lost, such as when the panicle has been aborted, matured, or harvested. We examined postharvest and midseason ratooning as management strategies for damaged rice crops, both in irrigated and rainfed conditions. Genotypic variation was observed in terms of postharvest ratoon tillering, midseason ratoon crop growth after lodging, and midseason ratoon crop growth after drought stress. The genotypic variation in postharvest ratoon tillering was related to stem carbohydrate levels at the time of main crop harvest and was affected by soil moisture levels at the time of main crop harvest. Drought‐tolerant varieties did not consistently show improved ratoon crop growth. After lodging, cutting stems at a height of 30 cm produced the highest numbers of ratoon tillers, and the contribution of the ratoon crop to the total harvestable grain yield was highest when the ratoon crop was initiated at earlier growth stages. The highest ratoon grain yields recovered from lodged crops ranged up to 3.58 t ha−1. Total grain yield after drought was improved by trimming the leaves and panicles only in certain conditions and did not appear to be correlated with stem carbohydrate levels. These results suggest that management strategies may be recommended to farmers that exploit the ratooning ability of rice for improved recovery after midseason crop damage.

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Section: Crop Sciencesupporting

confidence: 90%

Section: Crop Sciencementioning

confidence: 99%

Ratooning as a management strategy for lodged or drought‐damaged rice crops

et al. 2020

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“…Rice is one of the most important cereal crops and consumed as staple food over the globe (FAO 2009), whereas to improve the resource use efficiency would be of great importance to ensure food security for ever increasing population on sustained basis (Ashraf et al 2017a, b). Thus, it is necessary to explore the potential of rice production systems to meet the present and future food requirements (He et al 2019;Liu et al 2019a). Nitrogen (N) is one of the crucial and yield-limiting nutrients for rice (Fageria et al 2011), whereas the consumption of chemical fertilizers in China from 2000 to 2014 was increased by about 1.41 m tons annually due to its overuse by the farmers to achieve maximum crop yields (Chen et al 2018;Wang et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Straw Incorporation Coupled with Deep Placement of Nitrogen Fertilizer Improved Grain Yield and Nitrogen Use Efficiency in Direct-Seeded Rice

Chen

Ping

et al. 2020

J Soil Sci Plant Nutr

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The purpose of this study is to understand how grain yield and nitrogen use efficiency were affected by straw incorporation coupled with deep placement of nitrogen fertilizer in direct-seeded rice in South China. The experimental treatments comprised deep placement of N fertilization coupled with straw return (DS) and without straw return (DO) as well as surface broadcasting of N fertilizer coupled with straw return (SS) and without straw return (SO), whereas no fertilizer placement and no straw return were taken as a control (FS0) in two rice cultivars, i.e., Yuxiangyouzhan (YX) and Wufengyou615 (WF), grown in early and late season of 2018. Results depicted that, compared with FS0, DS significantly (P < 0.05) improved grain yield by 68.7-115.9% owing to higher net photosynthetic rate (Pn) at the heading stage, larger total aboveground biomass, and leaf area index (LAI). Compared with DO, the nitrogen recovery efficiency (NRE) and nitrogen agronomic use efficiency (NAE) in DS were increased by 19.3-188.6% and 1.9-33.8%, respectively. Furthermore, the nitrate reductase (NR) activity of the flag leaves at heading stage for DS was increased by 10.6-93.0% as compared with DO treatment. Therefore, straw incorporation coupled with deep placement of nitrogen fertilizer could be a feasible technique with the increase of grain yield and nitrogen use efficiency in direct-seeded rice (DSR) in South China.

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“…The plant growth was observed every week after final stem cutting. The regeneration rate was defined as the ratio calculated by the plant growth of the ratoon divided by that of the previous crop [29,30]. The harvesting day at the physiological maturity stage was determined about 25 days after the flowering day.…”

Section: Data Collectionmentioning

confidence: 99%

Effects of the Double-Cutting Method for Ratooning Rice in the SALIBU System under Different Soil Moisture Conditions on Grain Yield and Regeneration Rate

Shiraki

Cho²,

Htay³

et al. 2020

Agronomy

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In West Sumatra, Indonesia, a high-yield perennial rice cropping method called SALIBU was recently reported, in which the most unique feature is double cutting (DC) at harvest and after harvest. The objective of this study was to verify the ratooning rice yield under the SALIBU system in Myanmar. Two cultivation trials consisting of two cutting and three moisture treatments were conducted in 2019 and 2020. We concluded that double cutting had no positive effect on grain yield and regeneration rate compared with single cutting (SC). For the cutting regime, significant results were detected in the ratoon crops on yield components, but all of these were negative effects of DC, and were statistically lower than those of SC. On the other hand, a significant positive effect of moisture regime on grain yield in all ratoons was observed. The grain yield of the dry regime was significantly increased by 69% compared with that of the saturated regime. Soil oxidation conditions during the initial growth period of ratoons could contribute to the improved yield performance of the ratoons.

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Source-sink regulation and its effects on the regeneration ability of ratoon rice

Cited by 63 publications

References 31 publications

Ratooning as a management strategy for lodged or drought‐damaged rice crops

Ratooning as a management strategy for lodged or drought‐damaged rice crops

Straw Incorporation Coupled with Deep Placement of Nitrogen Fertilizer Improved Grain Yield and Nitrogen Use Efficiency in Direct-Seeded Rice

Effects of the Double-Cutting Method for Ratooning Rice in the SALIBU System under Different Soil Moisture Conditions on Grain Yield and Regeneration Rate

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