scholarly journals Root morphological‐physiological traits for japonica/indica hybrid rice with better yield performance under low N conditions

2022 ◽  
Author(s):  
Guang Chu ◽  
Ran Xu ◽  
Song Chen ◽  
Chunmei Xu ◽  
Yuanhui Liu ◽  
...  
Keyword(s):  
Hybrid Rice ◽  
Physiological Traits ◽  
Yield Performance ◽  
Indica Hybrid Rice

Characterization of Populations with Different Yield Levels in Indica Hybrid Rice in Plateau Area of Guizhou Province

2016 ◽  
Vol 42 (12) ◽  
pp. 1817
Author(s):  
De-Qiang LUO ◽  
Shao-Hua WANG ◽  
Xue-Hai JIANG ◽  
Gang-Hua LI ◽  
Wei-Jia ZHOU ◽  
...  
Keyword(s):  
Hybrid Rice ◽  
Guizhou Province ◽  
Plateau Area ◽  
Indica Hybrid Rice

Combining Ability Analysis of Agronomic Trait in Indica×Indica Hybrid Rice

2017 ◽  
Vol 43 (10) ◽  
pp. 1448
Author(s):  
Zheng ZHANG ◽  
Xue-Li ZHANG ◽  
Bo-Cheng MO ◽  
Zhi-Jun DAI ◽  
Zhong-Li HU ◽  
...  
Keyword(s):  
Combining Ability ◽  
Hybrid Rice ◽  
Agronomic Trait ◽  
Combining Ability Analysis ◽  
Indica Hybrid Rice

Analysis of heterosis, combining ability and heritability of cadmium content in brown rice of tri-line indica hybrid rice

2011 ◽  
Vol 19 (3) ◽  
pp. 668-671
Author(s):  
Ying-Jiang CAO ◽  
Shu-Mei YOU ◽  
Kai-Feng JIANG ◽  
Li YANG ◽  
Qian-Hua YANG ◽  
...  
Keyword(s):  
Combining Ability ◽  
Hybrid Rice ◽  
Brown Rice ◽  
Cadmium Content ◽  
Indica Hybrid Rice

scholarly journals Genotypic Variation in Nutrient Uptake Requirements of Rice Using the QUEFTS Model

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 26
Author(s):  
Tao Sun ◽  
Xin Yang ◽  
Sheng Tang ◽  
Kefeng Han ◽  
Ping He ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Field Experiments ◽  
Hybrid Rice ◽  
Genotypic Variation ◽  
Tropical Soils ◽  
Study Data ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Indica Hybrid Rice ◽  
Validation Experiments

Nutrient requirements for single-season rice using the quantitative evaluation of the fertility of tropical soils (QUEFTS) model in China have been estimated in a previous study, which involved all the rice varieties; however, it is unclear whether a similar result can be obtained for different rice varieties. In this study, data were collected from field experiments conducted from 2016 to 2019 in Zhejiang Province, China. The dataset was separated into two parts: japonica/indica hybrid rice and japonica rice. To produce 1000 kg of grain, 13.5 kg N, 3.6 kg P, and 20.4 kg K were required in the above-ground plant dry matter for japonica/indica hybrid rice, and the corresponding internal efficiencies (IEs) were 74.0 kg grain per kg N, 279.1 kg grain per kg P, and 49.1 kg grain per kg K. For japonica rice, 17.6 kg N, 4.1 kg P, and 23.0 kg K were required to produce 1000 kg of grain, and the corresponding IEs were 56.8 kg grain per kg N, 244.6 kg grain per kg P, and 43.5 kg grain per kg K. Field validation experiments indicated that the QUEFTS model could be used to estimate nutrient uptake of different rice varieties. We suggest that variety should be taken into consideration when estimating nutrient uptake for rice using the QUEFTS model, which would improve this model.

scholarly journals Effects of nitrogen application rate on the photosynthetic pigment, leaf fluorescence characteristics, and yield of indica hybrid rice and their interrelations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jinfeng Peng ◽  
Yuehua Feng ◽  
Xiaoke Wang ◽  
Jie Li ◽  
Guiling Xu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Hybrid Rice ◽  
Photosynthetic Pigment ◽  
Application Rate ◽  
Maturity Stage ◽  
Nitrogen Application ◽  
Fluorescence Characteristics ◽  
Heading Stage ◽  
Indica Hybrid Rice ◽  
Nitrogen Application Rate

AbstractA field experiment employing the rice cultivars Qyou6 and Yixiangyou2115 as materials and different nitrogen application rates was conducted in Huangping County, Guizhou Province in 2019 to determine the effects of nitrogen application rate on photosynthetic pigments, leaf fluorescence characteristics, yield, and their interrelations in indica hybrid rice. The results showed that photosynthetic pigment contents generally increased with increasing nitrogen application rate. As the nitrogen rate increased, the maximal quantum yield of PSII (Fv/Fm), actual quantum yield of PSII (ΦPSII), and relative electron transfer rate at PSII (ETR) first decreased and then increased at the booting stage; Fv/Fm and ΦPSII decreased while ETR first increased and then decreased at the heading stage; nevertheless, Fv/Fm and ΦPSII first decreased and then increased but ETR was just the opposite at the maturity stage. Non-photochemical quenching coefficient (qN) and quantum yield of regulatory energy dissipation at PSII (Y(NPQ)) first increased and then decreased whereas quantum yield of non-regulatory energy dissipation at PSII (Y(NO)) first decreased and then increased at the booting, heading, and maturity stages with increasing nitrogen application rate. Photochemical quenching coefficient (qP) showed an increasing trend as the nitrogen rate increased in the range of 150–300 kg/ha at the heading and maturity stages. Photosynthetic pigments, leaf fluorescence characteristics, and yield and its components were significantly correlated. First, chlorophylls a and b were significantly negatively correlated with Fv/Fm while significantly positively correlated with qP at the heading stage. Secondly, Carotenoids were significantly positively correlated with the effective panicle number (EPN) at the booting stage while significantly negatively correlated with the spikelets per panicle (SPP) at the heading stage. Chlorophyll a and carotenoids were significantly positively correlated with EPN but significantly negatively correlated with spikelet filling (SF) at the maturity stage. In addition, qP was significantly negatively correlated with EPN at the booting stage. At the heading stage, Fv/Fm and Y(NO) were significantly negatively correlated with EPN and SPP, respectively, and Fv/Fm and ΦPSII were significantly positively related to SF. Moreover, qP was extremely significantly positively related to EPN whereas Fv/Fm was extremely significantly negatively correlated with grain yield at the maturity stage. Appropriate nitrogen application rates can enhance photosynthetic pigment contents, improve the photochemical efficiency and proportion of the open part of the reaction center of PSII, and promote the quantum efficiency and self-protection ability of PSII, thereby increasing photosynthetic efficiency and yield. Under the conditions adopted in this experiment, a parabolic relationship was observed between the nitrogen application rate and grain yield. The regression analysis results showed that the best nitrogen application rate of indica hybrid rice is 168.16 kg ha−1 and the highest yield is 11,804.87 kg ha−1.

Grain and Dry Matter Yields and Partitioning of Assimilates in Japonica/Indica Hybrid Rice

Crop Science ◽  
2002 ◽  
Vol 42 (3) ◽  
pp. 766-772 ◽  
Author(s):  
Jianchang Yang ◽  
Shaobing Peng ◽  
Zujian Zhang ◽  
Zhiqin Wang ◽  
Romeo M. Visperas ◽  
...  
Keyword(s):  
Dry Matter ◽  
Hybrid Rice ◽  
Indica Hybrid Rice

Genetics of Morpho-Physiological Traits in Segregating Populations of Interspecific Hybrid Rice Under Stress and Non-Stress Conditions

2009 ◽  
Vol 23 (4) ◽  
pp. 383-401 ◽  
Author(s):  
Andrew A. Efisue ◽  
Pangirayi Tongoona ◽  
John Derera ◽  
Benjamin E. Ubi ◽  
Happiness O. Oselebe
Keyword(s):  
Interspecific Hybrid ◽  
Hybrid Rice ◽  
Stress Conditions ◽  
Physiological Traits

scholarly journals Improving cooking and eating quality of Xieyou57, an elite indica hybrid rice, by marker-assisted selection of the Wx locus

Euphytica ◽  
2011 ◽  
Vol 179 (2) ◽  
pp. 355-362 ◽  
Author(s):  
Dahu Ni ◽  
Shilu Zhang ◽  
Sheng Chen ◽  
Yong Xu ◽  
Li Li ◽  
...  
Keyword(s):  
Marker Assisted Selection ◽  
Hybrid Rice ◽  
Eating Quality ◽  
Wx Locus ◽  
Cooking And Eating Quality ◽  
Indica Hybrid Rice ◽  
Selection Of
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