Special Issue "High-Yield Rice Physiology & Genetics"

Submission Deadline: 31 January 2022
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Guest Editors
Dr. Dali Zeng, China National Rice Research Institute, China
Dr. Xiangyang Hu, Shanghai University, China

Summary

Rice (Oryza sativa L.) is the most important food crop in the world, being a staple food for more than half of the world's human population, especially in Asia. It plays an important role in global food security. Rice is also the first crop plant to have its genome sequenced, which promotes the establishment of the relatively complete research methods and a broad research base. Facing the challenge of global climate change and increasing food consumption, it is important to deeply analyze the physiological characteristics and genetic basis of high-yield rice for solving the growing food security problems in the world.

 

Potential topics may include, but are not limited to:

1) Physiological characteristics and yield of Rice

2) Abiotic and biotic stress on physiology and biochemistry of rice

3) Genomics-assisted breeding in rice

4) Analyses of yield and yield-related traits in rice

5) Grain yields of rice and environment (soil)


Keywords
Rice; Yield; Genetics; Physiology

Published Papers
  • Nanosilver-Promoted Lateral Root Development in Rice is Mediated through Hydrogen Peroxide
  • Abstract Nanosilver (10−9 m) refers to particles comprising 20–15,000 silver atoms, exhibiting high stability and specific surface area. At present, nanosilver has been used in agricultural cultivation and production. This study examined the effects of nanosilver on growth and development of rice root systems. Study results showed that fresh weight of rice belowground organs and root length both increased significantly by 5% and 25%, respectively, after rice radicles were treated with 2 ppm of nanosilver for three days. However, the H2O2 level reached its peak at 2 days from treatment, but the activities of the antioxidant enzymes CAT, APX, and GR… More
  •   Views:819       Downloads:393        Download PDF

  • Amylose Content, Morphology, Crystal Structure, and Thermal Properties of Starch Grains in Main and Ratoon Rice Crops
  • Abstract Rice ratooning, or the production of a second rice crop from stubble after the harvest of the main crop, is considered to be a green and resource-efficient rice production system. The present study was conducted to examine variance in amylose content (AC), grain morphology, crystal structure, and thermal properties of starch between main- and ratoon-season rice of seven varieties. Ratoon-season rice grains had higher ACs and significantly lower transition gelatinization temperatures (To, Tp, and Tc) than did main-season rice grains. The relative crystallinity and lamellar peak intensity of ratoon-season rice starch were 7.89% and 20.38% lower, respectively, than those of… More
  •   Views:920       Downloads:605        Download PDF

  • Characterization and Candidate Gene Analysis of the Yellow-Green Leaf Mutant ygl16 in Rice (Oryza sativa L.)
  • Abstract Leaf color mutants are ideal materials for studying many plant physiological and metabolic processes such as photosynthesis, photomorphogenesis, hormone physiology and disease resistance. In this study, the genetically stable yellow-green leaf mutant ygl16 was identified from mutated “Xinong 1B”. Compared with the wild type, the pigment concentration and photosynthetic capacity of the ygl16 decreased significantly. The ultrastructural observation showed that the distribution of thylakoid lamellae was irregular in ygl16 chloroplasts, and the grana and matrix lamellae were blurred and loose in varied degrees, and the chloroplast structure was disordered, while the osmiophilic corpuscles increased. The results of the genetic analysis… More
  •   Views:447       Downloads:347        Download PDF

  • Mechanism of Photothermal Energy on the Growth and Yield of Rice under Water Level Regulation
  • Abstract The flooding caused by heavy rainfall in rice irrigation area and the drought caused by the drop of groundwater level are the research focus in the field of irrigation and drainage. Based on the comparative experiment and farmland water level control technology, this paper studied the average soil temperature under different soil layers (TM), the daily temperature change (TDC), the photosynthetic accumulation of single leaf and canopy in rice, and response of photothermal energy to rice root characteristics and growth factors in the paddy field under drought conditions. The results showed that the peak soil temperature under drought treatment was… More
  •   Views:501       Downloads:411        Download PDF

  • Exploration and Validation of the Potential Downstream Genes Underlying ipa1-2D Locus for Rice Panicle Branching
  • Abstract In recent years, some super hybrid rice varieties were bred with strong culms and large panicles, which are mainly contributed by the ipa1-2D locus. A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly increase the panicle primary branch number. However, the key downstream genes mediating this trait variation are not fully explored. In this study, we developed high-quality near-isogenic lines (NILs) with a difference of only 30 kb chromosomal segment covering the ipa1-2D locus. Using the NILs, we explored the impact of ipa1-2D on five sequential stages of early inflorescence development, and found that the locus can… More
  •   Views:713       Downloads:585        Download PDF

  • Fine Mapping and Candidate Gene Prediction of the Quantitative Trait Locus qPL8 for Panicle Length in Rice
  • Abstract Rice panicle is the sink organ where assimilation product accumulates, and its morphology determines the rice yield. Panicle length has been suggested as a yield-related trait, but the genetic factor for its control is still limited. In this study, we carried out fine-mapping of qPL8, a QTL identified for panicle length in our previous work. Near isogenic line (NIL) with qPL8 exhibited elongated panicle without obvious effect on other panicle elements. With five key recombinants from NIL population, the locus was finally narrowed down to a 278-kb region, where 44 genes are annotated. By comparing the genomic sequence of two… More
  •   Views:1104       Downloads:543        Download PDF

  • Phenotype Analysis and Fine Mapping of the Male Sterile Mutant ms10 in Rice (Oryza sativa L.)
  • Abstract There is a positive correlation between fertility and yield, and the decrease of fertility is bound to a greatly reduced crop yield. Male sterile mutants can be used in hybrid rice. Therefore, rice male sterility has an important value in research and application, and the study of related mutants is also very vital. The mutant ms10 (male sterile 10) reported in this study was induced by ethyl methane sulfonate (EMS) in the indica maintainer line Xinong 1B. There was no significant difference between the ms10 and wild type in the vegetative growth stage. However, in the reproductive growth stage, ms10 More
  •   Views:1046       Downloads:515        Download PDF

  • Effects of Different Potassium (K) Fertilizer Rates on Yield Formation and Lodging of Rice
  • Abstract As one of the most important nutrients for plants, potassium (K) has substantial effects on growth and development of crops. Present study was conducted in three different sites in South China in late season in 2019 with the objective to study the effects of different applied amounts of K fertilizer on yield formation and lodging of rice. Four K fertilizer treatments, K0: 0 kg potassium oxide (K2O) ha−1 (control); K1: 64.20 kg K2O ha−1 ; K2: 128.55 kg K2O ha−1 and K3 153.90 kg K2O ha−1 were applied in the field experiment. The results showed that K2 and K3 treatments… More
  •   Views:737       Downloads:443        Download PDF