Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation
Extreme temperature events as a consequence of global climate change result in a significant decline in rice production. A two-year phytotron experiment was conducted using three temperature levels and two heating durations to compare the effects of heat stress at booting, flowering, and combined (b...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Plants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2223-7747/10/5/1021 |
| _version_ | 1797533448286502912 |
|---|---|
| author | Aqib Mahmood Wei Wang Iftikhar Ali Fengxian Zhen Raheel Osman Bing Liu Leilei Liu Yan Zhu Weixing Cao Liang Tang |
| author_facet | Aqib Mahmood Wei Wang Iftikhar Ali Fengxian Zhen Raheel Osman Bing Liu Leilei Liu Yan Zhu Weixing Cao Liang Tang |
| author_sort | Aqib Mahmood |
| collection | DOAJ |
| description | Extreme temperature events as a consequence of global climate change result in a significant decline in rice production. A two-year phytotron experiment was conducted using three temperature levels and two heating durations to compare the effects of heat stress at booting, flowering, and combined (booting + flowering) stages on the production of photosynthates and yield formation. The results showed that high temperature had a significant negative effect on mean net assimilation rate (MNAR), harvest index (HI), and grain yield per plant (YPP), and a significant positive effect under treatment T<sub>3</sub> on mean leaf area index (MLAI) and duration of photosynthesis (DOP), and no significant effect on biomass per plant at maturity (BPP<sub>M</sub>), except at the flowering stage. Negative linear relationships between heat degree days (HDD) and MNAR, HI, and YPP were observed. Conversely, HDD showed positive linear relationships with MLAI and DOP. In addition, BPP<sub>M</sub> also showed a positive relationship with HDD, except at flowering, for both cultivars and Wuyunjing-24 at combined stages. The variation of YPP in both cultivars was mainly attributed to HI compared to BPP<sub>M</sub>. However, for biomass, from the first day of high-temperature treatment to maturity (BPP<sub>T-M</sub>), the main change was caused by MNAR followed by DOP and then MLAI. The projected alleviation effects of multiple heat stress at combined stages compared to single-stage heat stress would help to understand and evaluate rice yield formation and screening of heat-tolerant rice cultivars under current scenarios of high temperature during the rice-growing season. |
| first_indexed | 2024-03-10T11:14:40Z |
| format | Article |
| id | doaj.art-e92122d5668a457e9d8e9f494e58fe1d |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T11:14:40Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-e92122d5668a457e9d8e9f494e58fe1d2023-11-21T20:31:39ZengMDPI AGPlants2223-77472021-05-01105102110.3390/plants10051021Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass AccumulationAqib Mahmood0Wei Wang1Iftikhar Ali2Fengxian Zhen3Raheel Osman4Bing Liu5Leilei Liu6Yan Zhu7Weixing Cao8Liang Tang9National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNational Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaExtreme temperature events as a consequence of global climate change result in a significant decline in rice production. A two-year phytotron experiment was conducted using three temperature levels and two heating durations to compare the effects of heat stress at booting, flowering, and combined (booting + flowering) stages on the production of photosynthates and yield formation. The results showed that high temperature had a significant negative effect on mean net assimilation rate (MNAR), harvest index (HI), and grain yield per plant (YPP), and a significant positive effect under treatment T<sub>3</sub> on mean leaf area index (MLAI) and duration of photosynthesis (DOP), and no significant effect on biomass per plant at maturity (BPP<sub>M</sub>), except at the flowering stage. Negative linear relationships between heat degree days (HDD) and MNAR, HI, and YPP were observed. Conversely, HDD showed positive linear relationships with MLAI and DOP. In addition, BPP<sub>M</sub> also showed a positive relationship with HDD, except at flowering, for both cultivars and Wuyunjing-24 at combined stages. The variation of YPP in both cultivars was mainly attributed to HI compared to BPP<sub>M</sub>. However, for biomass, from the first day of high-temperature treatment to maturity (BPP<sub>T-M</sub>), the main change was caused by MNAR followed by DOP and then MLAI. The projected alleviation effects of multiple heat stress at combined stages compared to single-stage heat stress would help to understand and evaluate rice yield formation and screening of heat-tolerant rice cultivars under current scenarios of high temperature during the rice-growing season.https://www.mdpi.com/2223-7747/10/5/1021bootingfloweringmultiple high-temperature stressphotosynthetic productionbiomassyield |
| spellingShingle | Aqib Mahmood Wei Wang Iftikhar Ali Fengxian Zhen Raheel Osman Bing Liu Leilei Liu Yan Zhu Weixing Cao Liang Tang Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation Plants booting flowering multiple high-temperature stress photosynthetic production biomass yield |
| title | Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation |
| title_full | Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation |
| title_fullStr | Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation |
| title_full_unstemmed | Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation |
| title_short | Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation |
| title_sort | individual and combined effects of booting and flowering high temperature stress on rice biomass accumulation |
| topic | booting flowering multiple high-temperature stress photosynthetic production biomass yield |
| url | https://www.mdpi.com/2223-7747/10/5/1021 |
| work_keys_str_mv | AT aqibmahmood individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT weiwang individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT iftikharali individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT fengxianzhen individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT raheelosman individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT bingliu individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT leileiliu individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT yanzhu individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT weixingcao individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation AT liangtang individualandcombinedeffectsofbootingandfloweringhightemperaturestressonricebiomassaccumulation |