Inter‐annual climate variability constrains rice genetic improvement in China

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

doi:10.1002/fes3.299

Cited by 6 publications

(7 citation statements)

References 58 publications

(73 reference statements)

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“…For example, JLYHZ had the highest yield stability while JLY1212 had the lowest yield stability across years (Table 1). Previous studies have demonstrated that variations in grain yield across different planting years are mainly associated with the variations in temperature in central China [29]. In this study, OsHSBP2, a negative regulator of heat shock response [43], was down-regulated in LLYHZ compared with JLYHZ and JLY1212 (Table S5).…”

Section: Physiological and Molecular Traits Limiting The Grain Yield ...mentioning

confidence: 57%

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Coordinating High Yield and Superior Eating Quality of Rice: A Case Study of Hybrid Varieties Derived from Longke638S and Jing4155S

et al. 2022

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The planting area of hybrid rice (Oryza sativa L.) has continuously decreased in recent years partially because of the low eating quality. Longke638S and Jing4155S are two elite male sterile lines, which are used for developing many hybrid varieties with large planting areas in China. Here, 21 hybrid rice varieties of an incomplete diallel cross population with Longke638S and Jing4155S as female parents were planted under field conditions for two consecutive years, aiming to investigate the physiological and transcriptomic characteristics that is required for coordinating high yield and superior eating quality. As a result, grain yield ranged from 7.15 to 9.23 t ha−1 in 2019 and from 7.49 to 9.23 t ha−1 in 2020, and a negative relationship was identified between yield and quality-related traits. Hybrid varieties with Longke638S as the female parent (LLY) had higher yield but lower eating quality than those with Jing4155S as the female parent (JLY). The higher yield of LLY over JLY was due to higher biomass production and N uptake as well as higher yield stability across planting years, while their lower grain quality can be mainly ascribed to lower amylose content and alkali spreading value. Male parents significantly affected yield-related traits of LLY and eating quality-related traits of JLY. Candidate genes involved in grain starch biosynthesis were differentially expressed between LLYHZ, JLYHZ, and JLY1212, such as Wx and ALK. Overall, this study examined the relationship between grain yield and eating quality and identified the physiological and molecular traits that limited grain yield or eating quality of LLY and JLY hybrid varieties.

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Section: Physiological and Molecular Traits Limiting The Grain Yield ...mentioning

confidence: 57%

“…The nitrogen uptake at each growth stage was calculated as the sum of N contents in each organ. The grain protein content was determined by multiplying the N concentration with 5.95 [29]. The nitrogen harvest index (NHI) was calculated as the ratio of N accumulation in grain over the total aboveground N uptake.…”

Section: Plant Sampling and Measurementmentioning

confidence: 99%

Coordinating High Yield and Superior Eating Quality of Rice: A Case Study of Hybrid Varieties Derived from Longke638S and Jing4155S

et al. 2022

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“…Except for amylose content, protein content is another index affecting cooking and eating quality, because many studies have reported a significantly negative correlation between protein content and cooking and eating quality in rice [19,21]. Furthermore, protein content is an important index for evaluating the nutritional quality of rice [18]. In the present study, compared with no shading, shading at the booting stage and shading at the grain filling stage significantly increased the protein content of rice, which was in line with the results of previous studies [22,44].…”

Section: Effects Of Shading At the Booting And Grain Filling Stages O...mentioning

confidence: 99%

“…A significantly positive correlation between amylose content and light intensity in rice has been observed [17]. As the second largest storage substance in rice endosperm, protein content determines the nutritional quality of rice [18]. Significant and negative correlations between grain protein content and cooking and eating quality have been widely observed in rice [19][20][21].…”

Section: Introductionmentioning

confidence: 97%

Shading at the Booting Stage Improved the Grain Quality of Hybrid Rice Due to Reduced Spikelet Production

Shang,

Liu,

et al. 2024

Agriculture

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As a growing abiotic stress, light deficient conditions seriously affect the yield and quality of rice. However, few studies focus on the effects of shading on grain quality at the booting stage and the responses of different hybrid rice cultivars to shading. Field experiments involving four representative rice (Oryza sativa L.) cultivars across no shading (CK) and 40% shading at the booting (S) and grain filling stages (SS) were conducted in 2021 and 2022. Compared with CK, S reduced grain yield by 53.0% but increased the head rice rate by 11.4% averaged across varieties and years. The chalkiness degree (CD) and chalky grain percentage (CR) were reduced by 73.0% and 61.6% in S due to its 45.3% lower total spikelets m–2, 44.0% lower grain–leaf ratio and 23.5% lower dry weight spikelet production efficiency, compared with CK. The CD and CR in SS were 49.5% and 41.0% higher and HR was 7.1% lower than that in CK. Shading significantly reduced amylose content, peak viscosity and breakdown value, but increased protein content and setback value, and the effects of SS were greater than S. Y-liangyou900 and Liangyoupeijiu showed better milling quality, while Y-liangyou900 and Chuanyou6203 obtained a better appearance and eating quality than the other varieties under both S and SS. In conclusion, shading at the booting stage significantly improved the milling, appearance and nutritional quality, and did not reduce the cooking and eating quality, but led to a significant decline in the grain yield of hybrid rice. Moreover, Y-liangyou900 exhibited better rice quality but lower yield under shading treatments. Therefore, more attention needs to be focused on screening shade-tolerant varieties using both yield and quality to cope with climate change in the future.

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“…Grain yield and grain protein content are important traits for wheat production, but they are usually negatively correlated [67][68][69]. This is related to the fact that protein synthesis requires more energy and photosynthetic products than carbohydrate synthesis, or it may be attributed to the dilution effect of carbohydrates on grain protein [70].…”

Section: Irrigation and Nitrogen Affect Yield And Grain Storage Prote...mentioning

confidence: 99%

Wheat GSPs and Processing Quality Are Affected by Irrigation and Nitrogen through Nitrogen Remobilisation

Shen,

Han,

Feng

et al. 2023

Foods

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The rheological properties and end-use qualities of many foods are mainly determined by the types and levels of grain storage proteins (GSPs) in wheat. GSP levels are influenced by various factors, including tillage management, irrigation, and fertiliser application. However, the effects of irrigation and nitrogen on GSPs remain unclear. To address this knowledge gap, a stationary split–split block design experiment was carried out in low- and high-fertility (LF and HF) soil, with the main plots subjected to irrigation treatments (W0, no irrigation; W1, irrigation only during the jointing stage; W2, irrigation twice during both jointing and flowering stages), subplots subjected to nitrogen application treatments (N0, no nitrogen application; N180, 180 kg/ha; N240, 240 kg/ha; N300, 300 kg/ha), and cultivars tested in sub–sub plots (FDC5, the strong-gluten cultivar Fengdecun 5; BN207, the medium-gluten cultivar Bainong 207). The results showed that GSP levels and processing qualities were significantly influenced by nitrogen application (p < 0.01), N240 was the optimal nitrogen rate, and the influence of irrigation was dependent on soil fertility. Optimal GSP levels were obtained under W2 treatment at LF conditions, and the content was increased by 17% and 16% for FDC5 and BN207 compared with W0 under N240 treatment, respectively. While the optimal GSP levels were obtained under W1 treatments at HF conditions, and the content was increased by 3% and 21% for FDC5 and BN207 compared with W0 under N240 treatment, respectively. Irrigation and nitrogen application increased the glutenin content by increasing Bx7 and Dy10 levels in FDC5, and by increasing the accumulation of Ax1 and Dx5 in BN207. Gliadins were mainly increased by enhancing α/β-gliadin levels. Correlation analysis indicated that a higher soil nitrate (NO3-N) content increased nitrogen remobilisation in leaves. Path analysis showed that Dy10, Dx5, and γ-gliadin largely determined wet glutenin content (WGC), dough stability time (DST), dough water absorption rate (DWR), and sedimentation value (SV). Therefore, appropriate irrigation and nitrogen application can improve nitrogen remobilisation, GSP levels, and processing qualities, thereby improving wheat quality and production.

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Inter‐annual climate variability constrains rice genetic improvement in China

Cited by 6 publications

References 58 publications

Coordinating High Yield and Superior Eating Quality of Rice: A Case Study of Hybrid Varieties Derived from Longke638S and Jing4155S

Coordinating High Yield and Superior Eating Quality of Rice: A Case Study of Hybrid Varieties Derived from Longke638S and Jing4155S

Shading at the Booting Stage Improved the Grain Quality of Hybrid Rice Due to Reduced Spikelet Production

Wheat GSPs and Processing Quality Are Affected by Irrigation and Nitrogen through Nitrogen Remobilisation

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