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
Upper leaf necrosis on Lilium cv. St...
~
Chang, Yao-Chien.
FindBook
Google Book
Amazon
博客來
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder./
作者:
Chang, Yao-Chien.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2002,
面頁冊數:
177 p.
附註:
Source: Dissertations Abstracts International, Volume: 64-06, Section: B.
Contained By:
Dissertations Abstracts International64-06B.
標題:
Botany. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063670
ISBN:
9780493825090
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder.
Chang, Yao-Chien.
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder.
- Ann Arbor : ProQuest Dissertations & Theses, 2002 - 177 p.
Source: Dissertations Abstracts International, Volume: 64-06, Section: B.
Thesis (Ph.D.)--Cornell University, 2002.
This item must not be sold to any third party vendors.
A necrotic disorder that we termed "upper leaf necrosis" (ULN) occurs on the upper leaves of Lilium cv. Star Gazer. The disorder resembles calcium (Ca) deficiency of other crops, so we hypothesized it was a Ca deficiency disorder. We acquired the following data to support this hypothesis: (1) The Ca concentration in necrosed tissue was only 0.10% (w/w), much less than that in healthy tissue (0.57%). Leaf Ca concentration was negatively correlated with necrosed area. (2) By using Ca-free nutrient solution in sand cultures with smaller bulbs that are not normally susceptible, we were able to reproduce the symptoms of ULN. (3) Supplying supplemental Ca directly to young leaves significantly reduced ULN severity. ULN occurred only on upper leaves. It was initially characterized by depressed regions on lower leaf surface or water-soaked tissues, that often led to leaf curling, distortion, or tip death. For plants grown from bulbs 16/18 cm circumference, most began to show symptoms 30-40 days after planting. At this stage, plants were in the rapid growth phase, with a height of 32 cm, and 6 leaves immediately below flower buds remaining to unfold. ULN was primarily caused by insufficient Ca supply from the bulb. While the bulb did export Ca to the shoot, the amount was limited. Accordingly, symptoms appeared on the upper, young leaves. Leaf overlap (enclosure), which reduced the transpiration of young leaves, is an important factor that encouraged the occurrence of ULN. By manually unfolding leaves, transpiration of young upper leaves was increased, and ULN was prevented. Plants grown from large bulbs (>16 cm) were much more susceptible, a more enclosed shoot apex might be the major cause. Low light intensity reduced transpiration, and led to a more severe ULN. Mist also increased the risk of ULN. Foliar Ca sprays significantly reduced the severity of ULN; fourteen daily sprays of 25 mM calcium chloride or calcium nitrate were both effective. Using overhead fans to increase air flow on the tops of plants significantly reduced both incidence and severity, offering another promising method to control this disorder.
ISBN: 9780493825090Subjects--Topical Terms:
516217
Botany.
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder.
LDR
:03282nmm a2200337 4500
001
2207399
005
20190920101649.5
008
201008s2002 ||||||||||||||||| ||eng d
020
$a
9780493825090
035
$a
(MiAaPQ)AAI3063670
035
$a
AAI3063670
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Chang, Yao-Chien.
$3
3434386
245
1 0
$a
Upper leaf necrosis on Lilium cv. Star Gazer: A calcium deficiency disorder.
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2002
300
$a
177 p.
500
$a
Source: Dissertations Abstracts International, Volume: 64-06, Section: B.
500
$a
Publisher info.: Dissertation/Thesis.
500
$a
Advisor: Miller, William B.
502
$a
Thesis (Ph.D.)--Cornell University, 2002.
506
$a
This item must not be sold to any third party vendors.
506
$a
This item must not be added to any third party search indexes.
520
$a
A necrotic disorder that we termed "upper leaf necrosis" (ULN) occurs on the upper leaves of Lilium cv. Star Gazer. The disorder resembles calcium (Ca) deficiency of other crops, so we hypothesized it was a Ca deficiency disorder. We acquired the following data to support this hypothesis: (1) The Ca concentration in necrosed tissue was only 0.10% (w/w), much less than that in healthy tissue (0.57%). Leaf Ca concentration was negatively correlated with necrosed area. (2) By using Ca-free nutrient solution in sand cultures with smaller bulbs that are not normally susceptible, we were able to reproduce the symptoms of ULN. (3) Supplying supplemental Ca directly to young leaves significantly reduced ULN severity. ULN occurred only on upper leaves. It was initially characterized by depressed regions on lower leaf surface or water-soaked tissues, that often led to leaf curling, distortion, or tip death. For plants grown from bulbs 16/18 cm circumference, most began to show symptoms 30-40 days after planting. At this stage, plants were in the rapid growth phase, with a height of 32 cm, and 6 leaves immediately below flower buds remaining to unfold. ULN was primarily caused by insufficient Ca supply from the bulb. While the bulb did export Ca to the shoot, the amount was limited. Accordingly, symptoms appeared on the upper, young leaves. Leaf overlap (enclosure), which reduced the transpiration of young leaves, is an important factor that encouraged the occurrence of ULN. By manually unfolding leaves, transpiration of young upper leaves was increased, and ULN was prevented. Plants grown from large bulbs (>16 cm) were much more susceptible, a more enclosed shoot apex might be the major cause. Low light intensity reduced transpiration, and led to a more severe ULN. Mist also increased the risk of ULN. Foliar Ca sprays significantly reduced the severity of ULN; fourteen daily sprays of 25 mM calcium chloride or calcium nitrate were both effective. Using overhead fans to increase air flow on the tops of plants significantly reduced both incidence and severity, offering another promising method to control this disorder.
590
$a
School code: 0058.
650
4
$a
Botany.
$3
516217
650
4
$a
Plant propagation.
$3
1621657
650
4
$a
Plant pathology.
$3
3174872
690
$a
0817
690
$a
0479
690
$a
0480
710
2
$a
Cornell University.
$3
530586
773
0
$t
Dissertations Abstracts International
$g
64-06B.
790
$a
0058
791
$a
Ph.D.
792
$a
2002
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063670
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
W9383948
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