Arid
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
ISSN0096-378X
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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