Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice
To reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. T...
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MDPI AG
2020-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/2/209 |
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| author | Yonghui Pan Shuai Gao Kailiu Xie Zhifeng Lu Xusheng Meng Shiyu Wang Jianwei Lu Shiwei Guo |
| author_facet | Yonghui Pan Shuai Gao Kailiu Xie Zhifeng Lu Xusheng Meng Shiyu Wang Jianwei Lu Shiwei Guo |
| author_sort | Yonghui Pan |
| collection | DOAJ |
| description | To reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. The average grain yield of YLY across nitrogen fertilizer rates was 10.1 t ha<sup>−1</sup> in 2016 and 9.7 t ha<sup>−1</sup> in 2017, 29.6% and 21.3% higher than that of ZD in 2016 and 2017, respectively. YLY showed higher above-ground biomass accumulation, especially growth before heading, which was mainly due to its faster green leaf area index (GLAI) formation and greater maximum GLAI (GLAI<sub>max</sub>). The daily radiation interception (RI<sub>daily</sub>) was 15.0% higher in YLY than ZD, but the accumulated radiation interception (RI<sub>acc</sub>) before heading showed little difference between them because ZD had a longer growth duration. The radiation use efficiency (RUE) of YLY before heading was 54.7% higher than that of ZD (YLY, 2.12 g MJ<sup>−1</sup>; ZD, 1.37 g MJ<sup>−1</sup>). Our result demonstrated that the yield advantage of YLY was due to its higher above-ground biomass before heading, which was mainly achieved by its improvement in RUE rather than radiation interception. |
| first_indexed | 2024-12-21T16:36:25Z |
| format | Article |
| id | doaj.art-1490f8167790458191e44f41c08f1977 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-12-21T16:36:25Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-1490f8167790458191e44f41c08f19772022-12-21T18:57:13ZengMDPI AGAgronomy2073-43952020-02-0110220910.3390/agronomy10020209agronomy10020209Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid RiceYonghui Pan0Shuai Gao1Kailiu Xie2Zhifeng Lu3Xusheng Meng4Shiyu Wang5Jianwei Lu6Shiwei Guo7Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaJiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaJiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaJiangsu Provincial Key Lab for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, ChinaTo reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. The average grain yield of YLY across nitrogen fertilizer rates was 10.1 t ha<sup>−1</sup> in 2016 and 9.7 t ha<sup>−1</sup> in 2017, 29.6% and 21.3% higher than that of ZD in 2016 and 2017, respectively. YLY showed higher above-ground biomass accumulation, especially growth before heading, which was mainly due to its faster green leaf area index (GLAI) formation and greater maximum GLAI (GLAI<sub>max</sub>). The daily radiation interception (RI<sub>daily</sub>) was 15.0% higher in YLY than ZD, but the accumulated radiation interception (RI<sub>acc</sub>) before heading showed little difference between them because ZD had a longer growth duration. The radiation use efficiency (RUE) of YLY before heading was 54.7% higher than that of ZD (YLY, 2.12 g MJ<sup>−1</sup>; ZD, 1.37 g MJ<sup>−1</sup>). Our result demonstrated that the yield advantage of YLY was due to its higher above-ground biomass before heading, which was mainly achieved by its improvement in RUE rather than radiation interception.https://www.mdpi.com/2073-4395/10/2/209super hybrid riceinbred super ricegreen leaf area indexradiation interceptionradiation use efficiency |
| spellingShingle | Yonghui Pan Shuai Gao Kailiu Xie Zhifeng Lu Xusheng Meng Shiyu Wang Jianwei Lu Shiwei Guo Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice Agronomy super hybrid rice inbred super rice green leaf area index radiation interception radiation use efficiency |
| title | Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice |
| title_full | Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice |
| title_fullStr | Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice |
| title_full_unstemmed | Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice |
| title_short | Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice |
| title_sort | higher radiation use efficiency produces greater biomass before heading and grain yield in super hybrid rice |
| topic | super hybrid rice inbred super rice green leaf area index radiation interception radiation use efficiency |
| url | https://www.mdpi.com/2073-4395/10/2/209 |
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