Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature
Crop heat units (CHU) and ≥10 °C active accumulated temperature (≥10 °C AAT) are important indexes to quantify the effects of temperature on soybean development. The relative maturity group (RMG) is widely used in the classification of different soybean varieties. However, CHU and ≥10 °C AAT (AAT) w...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/12/6/1444 |
| _version_ | 1827663166108073984 |
|---|---|
| author | Huiwen Wen Tingting Wu Hongchang Jia Wenwen Song Cailong Xu Tianfu Han Shi Sun Cunxiang Wu |
| author_facet | Huiwen Wen Tingting Wu Hongchang Jia Wenwen Song Cailong Xu Tianfu Han Shi Sun Cunxiang Wu |
| author_sort | Huiwen Wen |
| collection | DOAJ |
| description | Crop heat units (CHU) and ≥10 °C active accumulated temperature (≥10 °C AAT) are important indexes to quantify the effects of temperature on soybean development. The relative maturity group (RMG) is widely used in the classification of different soybean varieties. However, CHU and ≥10 °C AAT (AAT) were applied in Canada and northeastern China, respectively, and the relationships among CHU, AAT and RMG are poorly documented. The objective of this study is to analyze the conversion function among CHU, AAT and RMG based on two datasets. The first dataset was obtained to analyze the relationship between RMG and AAT in 395 varieties in Northeast China. The second dataset was obtained to calculate the relationship between CHU and AAT at 95 weather stations based on 30-year climatic data (1990–2019). The results showed that both relationships were significantly and positively correlated, and the <i>R</i>-square of these relationships were 0.90 and 0.98, respectively. The distribution of CHU or AAT in the Northeast is proposed. These results can be extensively used for predicting the CHU or AAT of soybean cultivars given the known RMG, thus determining the adaptation zone as well as the growth stage of agricultural practices and responses to heat accumulation. The conclusion of the current study is expected to be widely adopted by soybean regionalization and germplasm exchanges throughout the world. |
| first_indexed | 2024-03-10T00:38:06Z |
| format | Article |
| id | doaj.art-254d4089d4854f3c948950551437929d |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T00:38:06Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-254d4089d4854f3c948950551437929d2023-11-23T15:11:52ZengMDPI AGAgronomy2073-43952022-06-01126144410.3390/agronomy12061444Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated TemperatureHuiwen Wen0Tingting Wu1Hongchang Jia2Wenwen Song3Cailong Xu4Tianfu Han5Shi Sun6Cunxiang Wu7Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaHeihe Branch of Heilongjiang Academy of Agricultural Sciences, Heihe 164300, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaCrop heat units (CHU) and ≥10 °C active accumulated temperature (≥10 °C AAT) are important indexes to quantify the effects of temperature on soybean development. The relative maturity group (RMG) is widely used in the classification of different soybean varieties. However, CHU and ≥10 °C AAT (AAT) were applied in Canada and northeastern China, respectively, and the relationships among CHU, AAT and RMG are poorly documented. The objective of this study is to analyze the conversion function among CHU, AAT and RMG based on two datasets. The first dataset was obtained to analyze the relationship between RMG and AAT in 395 varieties in Northeast China. The second dataset was obtained to calculate the relationship between CHU and AAT at 95 weather stations based on 30-year climatic data (1990–2019). The results showed that both relationships were significantly and positively correlated, and the <i>R</i>-square of these relationships were 0.90 and 0.98, respectively. The distribution of CHU or AAT in the Northeast is proposed. These results can be extensively used for predicting the CHU or AAT of soybean cultivars given the known RMG, thus determining the adaptation zone as well as the growth stage of agricultural practices and responses to heat accumulation. The conclusion of the current study is expected to be widely adopted by soybean regionalization and germplasm exchanges throughout the world.https://www.mdpi.com/2073-4395/12/6/1444≥10 °C active accumulated temperature (≥10 °C AAT)maturity groupcrop heat units (CHU) |
| spellingShingle | Huiwen Wen Tingting Wu Hongchang Jia Wenwen Song Cailong Xu Tianfu Han Shi Sun Cunxiang Wu Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature Agronomy ≥10 °C active accumulated temperature (≥10 °C AAT) maturity group crop heat units (CHU) |
| title | Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature |
| title_full | Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature |
| title_fullStr | Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature |
| title_full_unstemmed | Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature |
| title_short | Analysis of Relationship between Soybean Relative Maturity Group, Crop Heat Units and ≥10 °C Active Accumulated Temperature |
| title_sort | analysis of relationship between soybean relative maturity group crop heat units and ≥10 °c active accumulated temperature |
| topic | ≥10 °C active accumulated temperature (≥10 °C AAT) maturity group crop heat units (CHU) |
| url | https://www.mdpi.com/2073-4395/12/6/1444 |
| work_keys_str_mv | AT huiwenwen analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT tingtingwu analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT hongchangjia analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT wenwensong analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT cailongxu analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT tianfuhan analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT shisun analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature AT cunxiangwu analysisofrelationshipbetweensoybeanrelativematuritygroupcropheatunitsand10cactiveaccumulatedtemperature |