語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
ENHANCING biological nitrogen fixati...
~
Kabahuma, Mercy Kasuzi.
FindBook
Google Book
Amazon
博客來
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.).
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.)./
作者:
Kabahuma, Mercy Kasuzi.
面頁冊數:
82 p.
附註:
Source: Masters Abstracts International, Volume: 52-01.
Contained By:
Masters Abstracts International52-01(E).
標題:
Agriculture, Agronomy. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1540080
ISBN:
9781303168376
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.).
Kabahuma, Mercy Kasuzi.
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.).
- 82 p.
Source: Masters Abstracts International, Volume: 52-01.
Thesis (M.S.)--Iowa State University, 2013.
Common bean (Phaseolus vulgaris L.) is a herbaceous annual which, in a symbiotic relationship with specific soil bacteria, 'fixes' atmospheric nitrogen (N2) into amino form that can be used for plant growth. Efforts to optimize biological nitrogen fixation (BNF) in common beans are critical because of widespread increase in soil degradation in Africa. Among legumes, common beans derive the least percent N2 from N 2 fixation. This has been attributed partly to susceptibility of common beans to physical and chemical environmental stresses, inconsistent response to inoculum, and lack of selection for the BNF trait. Improvement in productivity of this leguminous crop could be achieved through identification of genotypes with greatest capacity for BNF and nitrogen assimilation from BNF. Chapter 2 presents phenotypic traits that could possibly be associated with BNF and N assimilation. Bean lines varying in ability to form nodules and fix nitrogen were analyzed for root, stem, leaf, petiole and pod biomass, ureide concentration, nitrogen concentration, and nodule numbers. There was significant variation in ureide accumulation across plant tissues and genotypes. A combination of phenotypic traits, however, could be used to select for improved BNF. Moderate nodule number, leaf ureide content, and total biomass at flowering were consistent with greater BNF. Nodule effectiveness should be considered for increasing % N derived from N2 fixation. In Chapter 3 a grafting technique was used to determine shoot and/ or root control of ureide accumulation and partitioning among four genotypes noted for variation in phenotypic traits related to nitrogen fixation. The extent of nodulation, as modified by super-nodulating scions or non-nodulating rootstocks, only indirectly affected ureide and N accumulation. Plants with a greater number of nodules did not accumulate more nitrogen, indicating most nodules were not effective in fixing N. The results indicate shoot regulation of nodulation, ureide metabolism, and nodule effectiveness would be ideal physiological targets for further investigations aimed at improving BNF and yield.
ISBN: 9781303168376Subjects--Topical Terms:
1018679
Agriculture, Agronomy.
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.).
LDR
:02990nam 2200277 4500
001
1958040
005
20140224122705.5
008
150212s2013 ||||||||||||||||| ||eng d
020
$a
9781303168376
035
$a
(MiAaPQ)AAI1540080
035
$a
AAI1540080
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Kabahuma, Mercy Kasuzi.
$3
2093001
245
1 0
$a
ENHANCING biological nitrogen fixation in Common bean ( Phaseolus vulgaris L.).
300
$a
82 p.
500
$a
Source: Masters Abstracts International, Volume: 52-01.
500
$a
Adviser: Mark E. Westgate.
502
$a
Thesis (M.S.)--Iowa State University, 2013.
520
$a
Common bean (Phaseolus vulgaris L.) is a herbaceous annual which, in a symbiotic relationship with specific soil bacteria, 'fixes' atmospheric nitrogen (N2) into amino form that can be used for plant growth. Efforts to optimize biological nitrogen fixation (BNF) in common beans are critical because of widespread increase in soil degradation in Africa. Among legumes, common beans derive the least percent N2 from N 2 fixation. This has been attributed partly to susceptibility of common beans to physical and chemical environmental stresses, inconsistent response to inoculum, and lack of selection for the BNF trait. Improvement in productivity of this leguminous crop could be achieved through identification of genotypes with greatest capacity for BNF and nitrogen assimilation from BNF. Chapter 2 presents phenotypic traits that could possibly be associated with BNF and N assimilation. Bean lines varying in ability to form nodules and fix nitrogen were analyzed for root, stem, leaf, petiole and pod biomass, ureide concentration, nitrogen concentration, and nodule numbers. There was significant variation in ureide accumulation across plant tissues and genotypes. A combination of phenotypic traits, however, could be used to select for improved BNF. Moderate nodule number, leaf ureide content, and total biomass at flowering were consistent with greater BNF. Nodule effectiveness should be considered for increasing % N derived from N2 fixation. In Chapter 3 a grafting technique was used to determine shoot and/ or root control of ureide accumulation and partitioning among four genotypes noted for variation in phenotypic traits related to nitrogen fixation. The extent of nodulation, as modified by super-nodulating scions or non-nodulating rootstocks, only indirectly affected ureide and N accumulation. Plants with a greater number of nodules did not accumulate more nitrogen, indicating most nodules were not effective in fixing N. The results indicate shoot regulation of nodulation, ureide metabolism, and nodule effectiveness would be ideal physiological targets for further investigations aimed at improving BNF and yield.
590
$a
School code: 0097.
650
4
$a
Agriculture, Agronomy.
$3
1018679
650
4
$a
Agriculture, Plant Culture.
$3
1018669
690
$a
0285
690
$a
0479
710
2
$a
Iowa State University.
$b
Agronomy.
$3
1023712
773
0
$t
Masters Abstracts International
$g
52-01(E).
790
$a
0097
791
$a
M.S.
792
$a
2013
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1540080
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9252868
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入