| Effects of different cutting intensities on main non-structural carbohydrate content of different root-type alfalfa |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2021.02.22 |
| Key Words: cutting intensity alfalfa root-type non-structural carbohydrate content |
| Author Name | Affiliation | | LI Bingyue | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China | | NAN Lili | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China | | WEN Sujun | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China | | ZHANG Yanan | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China | | CHEN Jie | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China | | ZHU Haihua | College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu 730070, China |
|
| Hits: 640 |
| Download times: 276 |
| Abstract: |
| Three alfalfa cultivars with different root types (rhizomatous root of Medicago sativa.cv. ‘Qingshui’, creeping root of M.varia Martin.cv. ‘Gannong No.2’, and tap root of M.sativa.cv. ‘Longdong’) were used as experimental materials. The design was a completely randomized, four-cutting intensities (20,27,34, and 41 d from the last mowing) were set up to study the effects of different cutting intensities on storage of nutrients substances (soluble sugar, sucrose, starch, and reducing sugar) in root, stem, and leaf of different root-type alfalfa, and to provide theoretical support for the rational and effective utilization of different root types of alfalfa and the regeneration of alfalfa in the following year after the cutting. The results showed that soluble sugar was the highest in leaf, reducing sugar was the highest in stem, starch and sucrose were the highest in root in June, and the average content was 5.75%, 2.32%, 3.16%, and 4.38%, respectively. Soluble sugar, reducing sugar, starch, and sucrose contents peaked in rootin September, and the average contents were 18.43%, 2.57%, 5.78%, and 14.12%, respectively. The contents of soluble sugar, starch, and sucrose in different root-types alfalfa were higher than those in other treatments under cutting frequency of every 27 d, while reducing sugar content was higher than that in other treatments under cutting frequency of every 41d. The contents of stored nutrients of creeping root of M.varia Martin.cv. ‘Gannong No.2’ and rhizomatous root of M. sativa.cv. ‘Qingshui’ were close to and higher than tap root of M.sativa L.cv. ‘Longdong’, which indicated that creeping rooted alfalfa and rhizomatous rooted alfalfa were more resistant to cold and winter. |
|
|
|