Dynamical partition of photosynthates in tillers of rice (Oryza sativa L.) during late growth period and its correlation with feeding value of rice straw at harvest

Dong, Chen; Liu, Xin Bao; Qu, Hui; Shen, Yi

doi:10.1016/j.fcr.2011.06.001

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Previous studies showed that the NSC content in fresh rice straw after grain harvest increased with the decrease of stubble height, there were more NSC stored in the basal stem node, and the WSC content was significantly higher than that of starch (Dong et al, 2011(Dong et al, , 2013(Dong et al, , 2018, but there were different results in this study (Figures 2,5,and 6). No matter the first season was harvested at waxy ripening stage, milk stage, or even heading stage, the first season grass and ratooning grass of weedy rice both had grain-filling panicles, and the accumulation of photosynthetic products in rice panicle was high, while the main components of that filling-panicle were starch, so the content of NSC in weedy rice grass was increased, and the main component of NSC was starch (Figures 2,5,and 6).…”

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confidence: 70%

Investigation on the forage utilization of indica and japonica weedy rice with strong ratooning ability

Dong,

2023

Weed Biology and Management

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There was few research on the utilization and development of weedy rice. Some weedy rice has remarkable good characteristics as forage in some soil which is difficult to plant crops and pastures. In this study, two weedy rice lines of japonica and indica subspecies with high ratooning ability (Xijing, japonica; Gaoxian, indica) were used to study the possibility of their forage utilization and related suitable cultivation methods. Three different stubble heights of first season were set in 2018 and 2019, and three cutting times of first season (heading stage, milk stage, and waxy ripening stage) were set in 2019. The ratoon grass was harvested 40 days after the first season harvest. For japonica weedy rice line Xijing, its grass yield was significantly lower than that of indica weedy rice line Gaoxian. The dry matter yield of first season grass plus ratoon grass of Gaoxian with the first season harvested at milk stage was the highest of all. The total digestible dry matter yield (first season grass plus ratoon grass) of Gaoxian with 15 cm cutting stubble of first season was higher than those of stubble 30 and 45 cm treatments (p < .05). In conclusions, indica weedy rice line Gaoxian, with high biomass of first season and good ratooning ability, had the good potential for forage development by harvesting first season at milk stage with 15 cm stubble height.

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confidence: 70%

Investigation on the forage utilization of indica and japonica weedy rice with strong ratooning ability

Dong,

2023

Weed Biology and Management

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“…The concentrations of soluble sugar and starch were determined following the procedure of Dong et al (2011). Briefly, soluble sugars were extracted from 50 mg of ground root tissue using 80% ethanol (v/v) for 40 min at 80°C.…”

Section: Chemical Analysesmentioning

confidence: 99%

Impact of root C and N reserves on shoot regrowth of defoliated alfalfa cultivars differing in fall dormancy

Hou

et al. 2017

Grassland Science

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Key determinants of regrowth rate following harvest in alfalfa (Medicago sativa L.) are the levels of root carbon (C) and nitrogen (N) reserves. This study was undertaken to assess the impact of alfalfa cultivars differing in fall dormancy on regrowth potential in relation to the quantitative changes in root C and N reserves at the onset of regrowth. Five contrasting alfalfa cultivars were grown in the field and were harvested three times. Shoot regrowth dry weight increased significantly with decreasing fall dormancy. Alfalfa cultivars with less dormancy tended to have higher concentrations of root C and N reserves, whereas significantly greater pools of root C and N reserves were found in roots at each harvest time because of greater root dry weight. Shoot regrowth was positively correlated to the pools of root soluble sugar, starch and total non‐structural carbohydrates, but not correlated to their concentrations at each harvest time. Shoot regrowth was also linearly related to the pools of root total N and soluble proteins, but not consistently related to their concentrations. Our results suggest that the total amount of C and N organic reserves in alfalfa roots rather than their concentrations are determining factors of shoot regrowth.

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Fenton process-affected transformation of roxarsone in paddy rice soils: Effects on plant growth and arsenic accumulation in rice grain

Qin

Lin

2016

Ecotoxicology and Environmental Safety

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Dynamical partition of photosynthates in tillers of rice (Oryza sativa L.) during late growth period and its correlation with feeding value of rice straw at harvest

Cited by 5 publications

References 9 publications

Investigation on the forage utilization of indica and japonica weedy rice with strong ratooning ability

Investigation on the forage utilization of indica and japonica weedy rice with strong ratooning ability

Impact of root C and N reserves on shoot regrowth of defoliated alfalfa cultivars differing in fall dormancy

Fenton process-affected transformation of roxarsone in paddy rice soils: Effects on plant growth and arsenic accumulation in rice grain

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