Interactive Effects of Drought–Flood Abrupt Alternation on Morpho-Agronomic and Nutrient Use Traits in Rice

Huang, Jie; Wu, Fengyan; Hu, Tiesong; Liu, Luguang; Wang, Jing; Wang, Xin; Liang, Chen; Liu, Jia

doi:10.3390/agronomy11112103

Cited by 11 publications

(5 citation statements)

References 59 publications

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“…processing results will be better, and 9). Drought factors have a big influence on rice growth, nutrient utilization and crop yields [17].…”

Section: Resultsmentioning

confidence: 99%

Technological Innovation to Increase The Cropping Index of Rice on Rainfed Fields At Labuhanbatu Regency

Jonharnas,

Helmi,

Girsang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The study of technological innovations to increase the cropping index in Rainfed Rice Fields aims to increase farmers’ knowledge and skills regarding rice farming so that their rice fields can be planted with rice more than once a year. This activity was conducted in Selat Beting Village, Panai Tengah District, Labuhan Batu Regency in 2021. The assessment was carried out in one area, consisting of the Field Laboratory (LL) location and the Field School (SL) location. The Field Laboratory is a study area covering an area of 5 ha. The treatmen use in this study was variety, seeding methods, planting methods, fertilizer dosage and pest control.The results of this study shown that the production of demo-farm area was 6.65 t/ha, while non-demo-farm only produced 4.76 t/ha. Farmers in Selat Beting village can plant rainfed rice at least twice a year. Selat Beting Village farmers have been introduced to rice farming business insurance (AUTP). Farmers who try to insure their crops do not mind because they pay very low premiums and are affordable for farmers. Based on rainfall patterns in Labuhanbatu Regency, farmers can plant rice at least twice a year, where in certain months there is rainfall, but it is not sufficient to irrigate the fields, therefore they must be assisted with shallow well pumps.

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“…processing results will be better, and 9). Drought factors have a big influence on rice growth, nutrient utilization and crop yields [17].…”

Section: Resultsmentioning

confidence: 99%

Technological Innovation to Increase The Cropping Index of Rice on Rainfed Fields At Labuhanbatu Regency

Jonharnas,

Helmi,

Girsang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…(2019) reported additively reducing effects of drought and flooding stress on rice yield, two other studies found a compensation for flooding‐related yield loss by a previous drought period (Gao et al., 2019; Huang et al., 2019). The increase in root formation through drought was reversed in the flooding period, dampening the positive effects mild drought can have on crop yield (Huang et al., 2019, 2021). In Arabidopsis, the stress response is largely accession‐specific.…”

Section: Flooding Stress In Combination With Other Stressesmentioning

confidence: 99%

‘Against all floods’: plant adaptation to flooding stress and combined abiotic stresses

Renziehausen,

Frings,

Schmidt‐Schippers

2024

The Plant Journal

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SUMMARYCurrent climate change brings with it a higher frequency of environmental stresses, which occur in combination rather than individually leading to massive crop losses worldwide. In addition to, for example, drought stress (low water availability), also flooding (excessive water) can threaten the plant, causing, among others, an energy crisis due to hypoxia, which is responded to by extensive transcriptional, metabolic and growth‐related adaptations. While signalling during flooding is relatively well understood, at least in model plants, the molecular mechanisms of combinatorial flooding stress responses, for example, flooding simultaneously with salinity, temperature stress and heavy metal stress or sequentially with drought stress, remain elusive. This represents a significant gap in knowledge due to the fact that dually stressed plants often show unique responses at multiple levels not observed under single stress. In this review, we (i) consider possible effects of stress combinations from a theoretical point of view, (ii) summarize the current state of knowledge on signal transduction under single flooding stress, (iii) describe plant adaptation responses to flooding stress combined with four other abiotic stresses and (iv) propose molecular components of combinatorial flooding (hypoxia) stress adaptation based on their reported dual roles in multiple stresses. This way, more future emphasis may be placed on deciphering molecular mechanisms of combinatorial flooding stress adaptation, thereby potentially stimulating development of molecular tools to improve plant resilience towards multi‐stress scenarios.

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“…A study [27] showed that the yield reduction rate of DFAA at the jointing stage was between 20% and 50% and that the yield reduction of the severe drought and severe flood group was the greatest. From the perspective of yield composition, some studies have suggested that the main reason for yield reduction is a reduction in the number of effective panicles and the number of grains per panicle, and some studies have suggested that it is related to a decrease in the seed setting rate [28,29]. In this study, the yield reduction range of DFAA was 5.1-39.65%, and the reduction in grain number and grain weight was the main factor influencing yield reduction.…”

Section: Interaction Effect Of Dfaa On Rice Yieldmentioning

confidence: 99%

The Interaction Effects of Drought–Flood Abrupt Alternation on Rice Yield and Dry Matter Partitioning

Gao,

Hu,

et al. 2023

Agronomy

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The frequent occurrence of drought–flood abrupt alternation (DFAA) seriously affects crop yield. It is particularly important to explore the dynamics of material accumulation and distribution under DFAA stress to analyze the mechanism of yield formation. In this study, a bucket experiment with DFAA stress groups, drought control (DC) groups, flood control (FC) groups, and normal irrigation (CK) groups was set up from the jointing to the heading stage of rice to analyze the interaction effects of DFAA stress on rice yield and dry matter partitioning. The results showed that compared with the CK group, the average yield reduction rate of rice in the DFAA groups was 23.03%, and the number of grains per panicle, total grain number, thousand-seed mass, and seed setting rate decreased. Compared with the DC groups, the DFAA groups had a significant reduction in yield and its components during the flooding period. Compared with the FC groups, the DFAA groups showed a compensation phenomenon in the yield and its components during the drought period. From the end of DFAA stress to the harvest period, the root partitioning index (PI) of the DFAA groups decreased, the stem PI increased first and then decreased, the leaf PI decreased, and the panicle PI increased. The results showed that the rice leaves increased and thickened, and the stems thickened under DFAA conditions to enhance the ability to resist drought and flooding stress, but the panicle rate was reduced, the growth period of rice was delayed, and the redundant growth of stems and leaves was increased. It is suggested that the depth and duration of stagnant water storage during the flood period of DFAA should be controlled, and the transfer and supply of photosynthetic products to grains should be increased to avoid serious yield reductions. The research results provide a theoretical basis for the rational development of farmland DFAA mitigation measures.

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Interactive Effects of Drought–Flood Abrupt Alternation on Morpho-Agronomic and Nutrient Use Traits in Rice

Cited by 11 publications

References 59 publications

Technological Innovation to Increase The Cropping Index of Rice on Rainfed Fields At Labuhanbatu Regency

Technological Innovation to Increase The Cropping Index of Rice on Rainfed Fields At Labuhanbatu Regency

‘Against all floods’: plant adaptation to flooding stress and combined abiotic stresses

The Interaction Effects of Drought–Flood Abrupt Alternation on Rice Yield and Dry Matter Partitioning

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