-
Tytuł:
-
Root morphological traits and distribution in direct-seeded rice under dense planting with reduced nitrogen.
-
Autorzy:
-
Deng J; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China.
Feng X; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China.
Wang D; China National Rice Research Institute, Hangzhou, China.
Lu J; College of Agriculture, Yangtze University, Jingzhou, China.
Chong H; College of Agriculture, Yangtze University, Jingzhou, China.
Shang C; College of Agriculture, Yangtze University, Jingzhou, China.
Liu K; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China.
Huang L; College of Agriculture, Yangtze University, Jingzhou, China.
Tian X; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China.; College of Agriculture, Yangtze University, Jingzhou, China.; Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou, China.
Zhang Y; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China.; College of Agriculture, Yangtze University, Jingzhou, China.; Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou, China.
-
Źródło:
-
PloS one [PLoS One] 2020 Sep 02; Vol. 15 (9), pp. e0238362. Date of Electronic Publication: 2020 Sep 02 (Print Publication: 2020).
-
Typ publikacji:
-
Journal Article; Research Support, Non-U.S. Gov't
-
Język:
-
English
-
Imprint Name(s):
-
Original Publication: San Francisco, CA : Public Library of Science
-
MeSH Terms:
-
Nitrogen/*pharmacology
Oryza/*physiology
Plant Roots/*anatomy & histology
Plant Roots/*physiology
Seeds/*physiology
Soil/*chemistry
Water/*chemistry
Oryza/drug effects ; Phenotype ; Plant Roots/drug effects ; Seasons ; Seeds/drug effects
-
References:
-
Sci Rep. 2018 Jan 9;8(1):131. (PMID: 29317720)
PLoS One. 2019 Mar 20;14(3):e0213075. (PMID: 30893321)
-
Substance Nomenclature:
-
0 (Soil)
059QF0KO0R (Water)
N762921K75 (Nitrogen)
-
Entry Date(s):
-
Date Created: 20200903 Date Completed: 20201026 Latest Revision: 20201026
-
Update Code:
-
20240104
-
PubMed Central ID:
-
PMC7467324
-
DOI:
-
10.1371/journal.pone.0238362
-
PMID:
-
32877452
-
Water and nutrient absorption from soil by crops mainly depend on the morphological traits and distribution of the crop roots. Dense planting with reduced nitrogen is a sustainable strategy for improving grain yield and nitrogen use efficiency. However, there is little information on the effects of dense planting with reduced nitrogen on direct-seeded inbred rice. Two-year field experiments were conducted with minirhizotron techniques to characterize the root morphological traits and distributions under different nitrogen application rates and sowing densities in two representative inbred rice varieties, Huanghuazhan (HHZ) and Yuenongsimiao (YNSM), grown under three nitrogen application rates (N0: 0 kg ha-1, LN: 135 kg ha-1, HN: 180 kg ha-1) and two sowing densities (LD: 18.75 kg ha-1, HD: 22.5 kg ha-1). Our study showed that dense planting with low nitrogen improved grain yield partly due to the increased panicle number. The higher sowing density with low nitrogen significantly affected the total root number (TRN), total root length (TRL), total root surface area (TRSA), and total root volume (TRV). There was a significant positive correlation between grain yield and TRL in the 10-20-cm soil layer (P < 0.05). The root morphological indexes were positively correlated with dry matter accumulation (P < 0.05) and negatively correlated with nitrogen content (P < 0.05) at the maturity stage. This study showed that a high sowing density with low nitrogen application can improve root morphology and distribution and increase grain yield and nitrogen use efficiency in direct-seeded inbred rice.
Competing Interests: The authors have declared that no competing interests exist.
Zaloguj się, aby uzyskać dostęp do pełnego tekstu.
