Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (1): 50-62.DOI: 10.1016/S2095-3119(15)61082-6

• 论文 • 上一篇    下一篇

Suitable growing zone and yield potential for late-maturity type of Yongyou japonica/indica hybrid rice in the lower reaches of Yangtze River, China

 WEI Huan-he, LI Chao, XING Zhi-peng, WANG Wen-ting, DAI Qi-gen, ZHOU Gui-shen, WANG Li, XU Ke, HUO Zhong-yang, GUO Bao-wei, WEI Hai-yan, ZHANG Hong-cheng   

  1. 1、Key Lab of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, P.R.China
    2、Innovation Center of Rice Technology in Yangtze Rice Valley, Ministry of Agriculture/Agricultural College, Yangzhou University,
    Yangzhou 225009, P.R.China
    3、Jointing Laboratory in Agricultural Sciences Between Agriculture and Agri-Food Canada (AFFC) and Yangzhou University,
    Yangzhou 225009, P.R.China
  • 收稿日期:2015-02-11 出版日期:2016-01-08 发布日期:2016-01-11
  • 通讯作者: ZHANG Hong-cheng, Tel: +86-514-87979220,E-mail: hchangyzu@outlook.com; DAI Qi-gen, Tel: +86-514-87979220, E-mail: qgdai@yzu.edu.cn
  • 作者简介:WEI Huan-he, E-mail: 920964110@qq.com;
  • 基金资助:

    This work was financed by the Special Program of Super Rice of Ministry of Agriculture, China (02318802013231), the National Public Services Sectors (Agricultural) Research Projects, China (201303102), the Major Scientific and Technological Projects, Bureau of Science and Technology of Ningbo, China (2013C11001), and the Innovative Training Program of Yangzhou University, China (KYLX15_1371).

Suitable growing zone and yield potential for late-maturity type of Yongyou japonica/indica hybrid rice in the lower reaches of Yangtze River, China

 WEI Huan-he, LI Chao, XING Zhi-peng, WANG Wen-ting, DAI Qi-gen, ZHOU Gui-shen, WANG Li, XU Ke, HUO Zhong-yang, GUO Bao-wei, WEI Hai-yan, ZHANG Hong-cheng   

  1. 1、Key Lab of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, P.R.China
    2、Innovation Center of Rice Technology in Yangtze Rice Valley, Ministry of Agriculture/Agricultural College, Yangzhou University,
    Yangzhou 225009, P.R.China
    3、Jointing Laboratory in Agricultural Sciences Between Agriculture and Agri-Food Canada (AFFC) and Yangzhou University,
    Yangzhou 225009, P.R.China
  • Received:2015-02-11 Online:2016-01-08 Published:2016-01-11
  • Contact: ZHANG Hong-cheng, Tel: +86-514-87979220,E-mail: hchangyzu@outlook.com; DAI Qi-gen, Tel: +86-514-87979220, E-mail: qgdai@yzu.edu.cn
  • About author:WEI Huan-he, E-mail: 920964110@qq.com;
  • Supported by:

    This work was financed by the Special Program of Super Rice of Ministry of Agriculture, China (02318802013231), the National Public Services Sectors (Agricultural) Research Projects, China (201303102), the Major Scientific and Technological Projects, Bureau of Science and Technology of Ningbo, China (2013C11001), and the Innovative Training Program of Yangzhou University, China (KYLX15_1371).

摘要: Late-maturity type of Yongyou japonica/indica hybrids series (LMYS) have shown great yield potential, and are being widely planted in the lower reaches of Yangtze River, China. Knowledge about suitable growing zone and evaluation of yield advantage is of practical importance for LMYS in this region. Fifteen LMYS, two high-yielding inbred japonica check varieties (CK-J) and two high-yielding hybrid indica check varieties (CK-I) were grown at Xinghua (119.57°E, 33.05°N) of Lixiahe region, Yangzhou (119.25°E, 32.30°N) of Yanjiang region, Changshu (120.46°E, 31.41°N) of Taihu Lake region, and Ningbo (121.31°E, 29.45°N) of Ningshao Plain in 2013 and 2014. The results showed that maturity dates of the 15 were later than the secure maturity date at Xinghua and 6, 14 and 15 LMYS were mature before the secure maturity date at Yangzhou, Changshu and Ningbo, respectively. One variety was identified as high-yielding variety among LMYS (HYYS) at Yangzhou, 8 HYYS in 2013 and 9 HYYS in 2014 at Changshu, 9 HYYS at Ningbo. HYYS here referred to the variety among LMYS that was mature before the secure maturity date and had at least 8% higher grain yield than both CK-J and CK-I at each experimental site. Grain yield of HYYS at each experimental site was about 12.0 t ha–1 or higher, and was significantly higher than CK varieties. High yield of HYYS was mainly attributed to larger sink size due to more spikelets per panicle. Plant height of HYYS was about 140 cm, and was significantly higher than check varieties. Significant positive correlations were recorded between duration from heading to maturity stage and grain yield, and also between whole growth periods and grain yield. HYYS had obvious advantage over check varieties in biomass accumulation and leaf area duration from heading to maturity stage. Comprehensive consideration about safe maturity and yield performance of LMYS at each experimental site, Taihu Lake region (representative site Changshu) and Ningshao Plain (representative site Ningbo) were thought suitable growing zones for LMYS in the lower reaches of Yangtze River. The main factors underlying high yield of HYYS were larger sink size, higher plant height, longer duration from heading to maturity stage and whole growth periods, and higher biomass accumulation and leaf area duration during grain filling stage.

关键词: japonica/indica hybrid rice , Yongyou series , late-maturity type , suitable growing zone , yield potential

Abstract: Late-maturity type of Yongyou japonica/indica hybrids series (LMYS) have shown great yield potential, and are being widely planted in the lower reaches of Yangtze River, China. Knowledge about suitable growing zone and evaluation of yield advantage is of practical importance for LMYS in this region. Fifteen LMYS, two high-yielding inbred japonica check varieties (CK-J) and two high-yielding hybrid indica check varieties (CK-I) were grown at Xinghua (119.57°E, 33.05°N) of Lixiahe region, Yangzhou (119.25°E, 32.30°N) of Yanjiang region, Changshu (120.46°E, 31.41°N) of Taihu Lake region, and Ningbo (121.31°E, 29.45°N) of Ningshao Plain in 2013 and 2014. The results showed that maturity dates of the 15 were later than the secure maturity date at Xinghua and 6, 14 and 15 LMYS were mature before the secure maturity date at Yangzhou, Changshu and Ningbo, respectively. One variety was identified as high-yielding variety among LMYS (HYYS) at Yangzhou, 8 HYYS in 2013 and 9 HYYS in 2014 at Changshu, 9 HYYS at Ningbo. HYYS here referred to the variety among LMYS that was mature before the secure maturity date and had at least 8% higher grain yield than both CK-J and CK-I at each experimental site. Grain yield of HYYS at each experimental site was about 12.0 t ha–1 or higher, and was significantly higher than CK varieties. High yield of HYYS was mainly attributed to larger sink size due to more spikelets per panicle. Plant height of HYYS was about 140 cm, and was significantly higher than check varieties. Significant positive correlations were recorded between duration from heading to maturity stage and grain yield, and also between whole growth periods and grain yield. HYYS had obvious advantage over check varieties in biomass accumulation and leaf area duration from heading to maturity stage. Comprehensive consideration about safe maturity and yield performance of LMYS at each experimental site, Taihu Lake region (representative site Changshu) and Ningshao Plain (representative site Ningbo) were thought suitable growing zones for LMYS in the lower reaches of Yangtze River. The main factors underlying high yield of HYYS were larger sink size, higher plant height, longer duration from heading to maturity stage and whole growth periods, and higher biomass accumulation and leaf area duration during grain filling stage.

Key words: japonica/indica hybrid rice , Yongyou series , late-maturity type , suitable growing zone , yield potential