Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities
Increasing planting density is one of the key management practices to enhance soybean yield. A 2-yr field experiment was conducted in 2018 and 2019 including six planting densities and two soybean cultivars to determine the effects of planting density on branch number and yield, and analyze the cont...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-01-01
|
| Series: | Agriculture |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0472/11/1/69 |
| _version_ | 1797410881592623104 |
|---|---|
| author | Cailong Xu Ruidong Li Wenwen Song Tingting Wu Shi Sun Shuixiu Hu Tianfu Han Cunxiang Wu |
| author_facet | Cailong Xu Ruidong Li Wenwen Song Tingting Wu Shi Sun Shuixiu Hu Tianfu Han Cunxiang Wu |
| author_sort | Cailong Xu |
| collection | DOAJ |
| description | Increasing planting density is one of the key management practices to enhance soybean yield. A 2-yr field experiment was conducted in 2018 and 2019 including six planting densities and two soybean cultivars to determine the effects of planting density on branch number and yield, and analyze the contribution of branches to yield. The yield of ZZXA12938 was 4389 kg ha<sup>−1</sup>, which was significantly higher than that of ZH13 (+22.4%). In combination with planting year and cultivar, the soybean yield increased significantly by 16.2%, 31.4%, 41.4%, and 46.7% for every increase in density of 45,000 plants ha<sup>−1</sup>. Yield will not increase when planting density exceeds 315,000 plants ha<sup>−1</sup>. A correlation analysis showed that pod number per plant increased with the increased branch number, while pod number per unit area decreased; thus, soybean yield decreased. With the increase of branch number, the branch contribution to yield increased first, and then plateaued. ZH13 could produce a high yield under a lower planting density due to more branches, while ZZXA12938 had a higher yield potential under a higher planting density due to the smaller branch number and higher tolerance to close planting. Therefore, seed yield can be increased by selecting cultivars with a little branching capacity under moderately close planting. |
| first_indexed | 2024-03-09T04:36:39Z |
| format | Article |
| id | doaj.art-3935d9f061a0452db00ccf53dd29c7e6 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-09T04:36:39Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-3935d9f061a0452db00ccf53dd29c7e62023-12-03T13:26:04ZengMDPI AGAgriculture2077-04722021-01-011116910.3390/agriculture11010069Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting DensitiesCailong Xu0Ruidong Li1Wenwen Song2Tingting Wu3Shi Sun4Shuixiu Hu5Tianfu Han6Cunxiang Wu7Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaSchool of Agronomy, Jiangxi Agricultural University, Nanchang 330045, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaInstitute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Soybean Industrial Technology R & D Center, Beijing 100081, ChinaIncreasing planting density is one of the key management practices to enhance soybean yield. A 2-yr field experiment was conducted in 2018 and 2019 including six planting densities and two soybean cultivars to determine the effects of planting density on branch number and yield, and analyze the contribution of branches to yield. The yield of ZZXA12938 was 4389 kg ha<sup>−1</sup>, which was significantly higher than that of ZH13 (+22.4%). In combination with planting year and cultivar, the soybean yield increased significantly by 16.2%, 31.4%, 41.4%, and 46.7% for every increase in density of 45,000 plants ha<sup>−1</sup>. Yield will not increase when planting density exceeds 315,000 plants ha<sup>−1</sup>. A correlation analysis showed that pod number per plant increased with the increased branch number, while pod number per unit area decreased; thus, soybean yield decreased. With the increase of branch number, the branch contribution to yield increased first, and then plateaued. ZH13 could produce a high yield under a lower planting density due to more branches, while ZZXA12938 had a higher yield potential under a higher planting density due to the smaller branch number and higher tolerance to close planting. Therefore, seed yield can be increased by selecting cultivars with a little branching capacity under moderately close planting.https://www.mdpi.com/2077-0472/11/1/69soybeanplanting densitybranchseed yield |
| spellingShingle | Cailong Xu Ruidong Li Wenwen Song Tingting Wu Shi Sun Shuixiu Hu Tianfu Han Cunxiang Wu Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities Agriculture soybean planting density branch seed yield |
| title | Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities |
| title_full | Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities |
| title_fullStr | Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities |
| title_full_unstemmed | Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities |
| title_short | Responses of Branch Number and Yield Component of Soybean Cultivars Tested in Different Planting Densities |
| title_sort | responses of branch number and yield component of soybean cultivars tested in different planting densities |
| topic | soybean planting density branch seed yield |
| url | https://www.mdpi.com/2077-0472/11/1/69 |
| work_keys_str_mv | AT cailongxu responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT ruidongli responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT wenwensong responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT tingtingwu responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT shisun responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT shuixiuhu responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT tianfuhan responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities AT cunxiangwu responsesofbranchnumberandyieldcomponentofsoybeancultivarstestedindifferentplantingdensities |