Knowledge Resource Center for Ecological Environment in Arid Area
IDENTIFYING PROMISING NEW FALCATA ALFALFA POPULATIONS FOR USE IN SEMIARID RANGELANDS | |
Kannenberg, Derek1; Xu, Lan1; Boe, Arvid2; Gates, Roger N.1; Johnson, Patricia S.1 | |
通讯作者 | Xu, Lan |
会议名称 | 100th Annual Meeting of the South Dakota Academy of Science |
会议日期 | APR 10-11, 2015 |
会议地点 | Oacoma, SD |
英文摘要 | Alfalfa (Medicago sativa L.) is a valuable crop worldwide. In addition to use as forage, the nitrogen fixation capabilities of root nodules make it a valuable component in maintaining soil health. Unfortunately, the semi-arid region of the Northern Great Plains introduces a number of environmental stresses that are detrimental to stand establishment and persistence. This study aimed to identify alfalfa populations possessing the ability to produce adventitious shoots from root segments. The ability to produce adventitious shoots from roots is generally considered a favorable trait for increasing stress resistance. Seven Plant Introductions (PIs), selected from the National Plant Germplasm System, and one commercial cultivar (Persist II) as a control, were evaluated. Two six- centimeter root segments, originating at one and seven centimeters below the cotyledonary node, were cut from one year old plants. Root segments were planted in Miracle-Gro (R) potting soil, and cultivated under greenhouse conditions for 16 weeks. Adventitious shoot emergence was recorded throughout the experimental period. At the end of the experimental period, the number of adventitious shoots, shoot survival, flowering status, and non-shoot-bearing root segment decay were determined. Six of the seven PIs produced adventitious shoots. No shoots were produced by Persist II and PI494662. Among the six populations, the frequency of generating adventitious shoots ranged from 3.8% to 57%. Shoot survival ranged from 33% to 100%. Speed of regeneration from roots and viability of root segments in soil varied among populations. PI631678 had the greatest frequency and speed of regeneration from roots, as well as high survival and flowering rates. Adventitious shoot regeneration and survival was not affected by origin distance below the cotyledonary node within in the same populations. |
英文关键词 | alfalfa adventitious shoot growth stress resistance root segment |
来源出版物 | PROCEEDINGS OF THE SOUTH DAKOTA ACADEMY OF SCIENCE, VOL 94 |
ISSN | 0096-378X |
出版年 | 2015 |
卷号 | 94 |
页码 | 273-280 |
ISBN | ***************** |
出版者 | SOUTH DAKOTA ACAD SCIENCE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000376419700022 |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/303585 |
作者单位 | 1.Dept Nat Resource Management, Brookings, SD 57007 USA; 2.S Dakota State Univ, Dept Plant Sci, Brookings, SD 57007 USA |
推荐引用方式 GB/T 7714 | Kannenberg, Derek,Xu, Lan,Boe, Arvid,et al. IDENTIFYING PROMISING NEW FALCATA ALFALFA POPULATIONS FOR USE IN SEMIARID RANGELANDS[C]:SOUTH DAKOTA ACAD SCIENCE,2015:273-280. |
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