東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁 到查詢結果 [ subject:"Plant propagation." ]

切換: 標籤 | MARC模式 | ISBD

Physiological effects of summer prun...

Li, Kuo-Tan.

FindBook

Google Book

Amazon

博客來

Physiological effects of summer pruning in apple trees.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Physiological effects of summer pruning in apple trees./
作者:	Li, Kuo-Tan.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2001,
面頁冊數:	238 p.
附註:	Source: Dissertations Abstracts International, Volume: 63-05, Section: B.
Contained By:	Dissertations Abstracts International63-05B.
標題:	Plant propagation. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3011217
ISBN:	9780493200712

Physiological effects of summer pruning in apple trees.
Li, Kuo-Tan.

Physiological effects of summer pruning in apple trees. - Ann Arbor : ProQuest Dissertations & Theses, 2001 - 238 p.

Source: Dissertations Abstracts International, Volume: 63-05, Section: B.

Thesis (Ph.D.)--Cornell University, 2001.

This item must not be sold to any third party vendors.

Summer pruning has been commonly used in apple (Malus domestica Borkh.) orchards to control canopy size and improve fruit color. However, it is expected that the removal of healthy, photosynthetically efficient shoot leaves during the growing season might impair the canopy photosynthetic function and result in shortage of carbohydrate supply for the demand of fruit and vegetative growth. To test this hypothesis, commercial-style summer pruning at various levels of severity was imposed on mature 'Empire' apple trees in Geneva, New York. Summer pruning increased canopy light transmission and light availability for interior leaves. However, photosynthesis of shaded leaves did not recover after re-exposure. Canopy photosynthesis, transpiration, and light interception were reduced in relation to the severity of summer pruning. With commercial ranges of crop load, light to moderate pruning severity did not significantly affect fruit growth. Effects of summer pruning on fruit size, return blooming and root survival were negative-exponentially related to physiological crop load, i.e. canopy photosynthesis per fruit, which represents the carbohydrate availability to fruit after pruning treatments. Results suggested that compared to pruning severity alone, carbon balance provides better explanations on the inconsistency of summer pruning effects. In addition, the impact of reduced carbohydrate supply after summer pruning on vegetative and reproductive performance may have been compensated by the simultaneous decrease in canopy transpiration and improved stem water potential. This compensation might be modified by weather conditions. Simulations with a simplified carbohydrate balance model was tested to integrate the responses of plants to summer pruning. The comparison between field measurements and simulation output generated valuable information to improve the precision of the model and the strategies for summer pruning.

ISBN: 9780493200712Subjects--Topical Terms:

1621657
Plant propagation.

Physiological effects of summer pruning in apple trees.
LDR:03054nmm a2200337 4500 001 2207398
005 20190920101649.5
008 201008s2001 ||||||||||||||||| ||eng d
020 $a 9780493200712
035 $a (MiAaPQ)AAI3011217
035 $a AAI3011217
040 $a MiAaPQ $c MiAaPQ
100 1 $a Li, Kuo-Tan. $3 3434385
245 1 0 $a Physiological effects of summer pruning in apple trees.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2001
300 $a 238 p.
500 $a Source: Dissertations Abstracts International, Volume: 63-05, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Lakso, Alan N.
502 $a Thesis (Ph.D.)--Cornell University, 2001.
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 Summer pruning has been commonly used in apple (Malus domestica Borkh.) orchards to control canopy size and improve fruit color. However, it is expected that the removal of healthy, photosynthetically efficient shoot leaves during the growing season might impair the canopy photosynthetic function and result in shortage of carbohydrate supply for the demand of fruit and vegetative growth. To test this hypothesis, commercial-style summer pruning at various levels of severity was imposed on mature 'Empire' apple trees in Geneva, New York. Summer pruning increased canopy light transmission and light availability for interior leaves. However, photosynthesis of shaded leaves did not recover after re-exposure. Canopy photosynthesis, transpiration, and light interception were reduced in relation to the severity of summer pruning. With commercial ranges of crop load, light to moderate pruning severity did not significantly affect fruit growth. Effects of summer pruning on fruit size, return blooming and root survival were negative-exponentially related to physiological crop load, i.e. canopy photosynthesis per fruit, which represents the carbohydrate availability to fruit after pruning treatments. Results suggested that compared to pruning severity alone, carbon balance provides better explanations on the inconsistency of summer pruning effects. In addition, the impact of reduced carbohydrate supply after summer pruning on vegetative and reproductive performance may have been compensated by the simultaneous decrease in canopy transpiration and improved stem water potential. This compensation might be modified by weather conditions. Simulations with a simplified carbohydrate balance model was tested to integrate the responses of plants to summer pruning. The comparison between field measurements and simulation output generated valuable information to improve the precision of the model and the strategies for summer pruning.
590 $a School code: 0058.
650 4 $a Plant propagation. $3 1621657
650 4 $a Botany. $3 516217
650 4 $a Agronomy. $3 2122783
690 $a 0479
690 $a 0817
690 $a 0285
710 2 $a Cornell University. $3 530586
773 0 $t Dissertations Abstracts International $g 63-05B.
790 $a 0058
791 $a Ph.D.
792 $a 2001
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3011217