Response of Agronomic Traits and Phosphorus Uptake to Soil P Deficiency During Rice Cultivars Improvement

Agronomy, Journal Year: 2025, Volume and Issue: 15(4), P. 983 - 983

Published: April 19, 2025

Developing high phosphorus (P) efficient rice varieties is essential for sustainable phosphate resource conservation. This study evaluated 16 cultivars from four breeding eras: ancient (<1940), early conventional (1940–2000), modern (2000–2020), and hybrid (2000–2020). Using pot experiments in low-P soil, we examined two P treatments: P0 (no application, simulating stress) P50 (50 kg hm−1 normal input). We systematically compared agronomic traits, distribution patterns, uptake efficiency across generations. The result showed that significantly increased root biomass, shoot grain yield while reducing plant height. Low-P stress (P0) had minimal impact on growth traits but negatively affected uptake, particularly content accumulation patterns. Under treatment, maintained a higher stem concentration (0.47–0.65 g·kg−1 vs. 0.27–0.49 varieties; 0.47–0.65 0.18–0.28 varieties, p < 0.05). allocation strategies varied eras. Root ratios decreased to the highest storage (24.1–30.5%), allocated largest partition of 76.4–78.1% grains. Additionally, fertilizer productivity by 131.09% 91.21% (p 0.01) rice, with hybrids exhibiting values both parameters. Principal component analysis (PCA) revealed distinct trait clusters separating ancient, conventional, based rhizosphere soil Random forest identified that, under conditions, was strongest predictor yield, whereas pH relationship yield. These findings demonstrate has enhanced adaptation through optimized architecture organ-specific strategies, which providing valuable insights developing future P-efficient varieties.

Language: Английский

Drought and heat stress studies in perennial ryegrass: a bibliometric analysis 1994–2024

Frontiers in Sustainable Food Systems, Journal Year: 2024, Volume and Issue: 8

Published: Dec. 4, 2024

Perennial ryegrass ( Lolium perenne L.) is a key forage species in warm temperate to subtropical regions worldwide. Climate change poses significant challenges agriculture, particularly through drought and heat stress, which adversely affect yield may be further exacerbated by global warming. Despite numerous research achievements recent years, comprehensive bibliometric analysis of the literature on stress perennial lacking. This study provides quantitative relevant published from 1994 2024, utilizing Web Science database evaluate trends priorities. The results indicate consistent annual growth publication output, with China United States being major contributors, journal Crop publishing most papers. Keyword shows that “growth,” “endophytic fungi,” “yield” are frequently used research, while “gene,” “leaf” common research. Over past 30 has mainly focused phenotype, response mechanisms, resistance techniques ryegrass. Endophyte have become hot topic years also gained attention suggesting future directions this area. Furthermore, there need strengthen molecular mechanisms associated ryegrass, as well explore responses stress. trend increasing interaction between indicating it will an important direction for studies. findings offer valuable insights guiding under conditions provide useful information researchers related fields.

Language: Английский