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Determining Cultivar-Specific Respon...

Hibbs, Richard S.

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Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective./
作者:	Hibbs, Richard S.
面頁冊數:	59 p.
附註:	Source: Masters Abstracts International, Volume: 52-02.
Contained By:	Masters Abstracts International52-02(E).
標題:	Agriculture, Horticulture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1546208
ISBN:	9781303442742

Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective.
Hibbs, Richard S.

Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective. - 59 p.

Source: Masters Abstracts International, Volume: 52-02.

Thesis (M.S.)--University of California, Davis, 2013.

It has been demonstrated that stomata of various Vitis vinifera L. cultivars may behave differently in response to soil and air water deficits. A study was undertaken in a vineyard located in the San Joaquin Valley of California to examine whether such differences exist in four wine grape cultivars; Cabernet Sauvignon, Grenache, Petit Verdot and Syrah.

ISBN: 9781303442742Subjects--Topical Terms:

1017832
Agriculture, Horticulture.

Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective.
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245 1 0 $a Determining Cultivar-Specific Response to Water Stress: A Plant Hydraulics Perspective.
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500 $a Source: Masters Abstracts International, Volume: 52-02.
500 $a Advisers: Larry E. Williams; Andrew J. McElrone.
502 $a Thesis (M.S.)--University of California, Davis, 2013.
520 $a It has been demonstrated that stomata of various Vitis vinifera L. cultivars may behave differently in response to soil and air water deficits. A study was undertaken in a vineyard located in the San Joaquin Valley of California to examine whether such differences exist in four wine grape cultivars; Cabernet Sauvignon, Grenache, Petit Verdot and Syrah.
520 $a In 2010 all vines in the trial were irrigated until just before the measurement period, at which point irrigation was terminated. The vines were then irrigated just before the end of the measurement period. Sap flow, shaded area and leaf water potential (&PSgr;1) were measured in 2010. In 2011 an irrigated and non-irrigated treatment were used for each cultivar. Sap flow, shaded area, and leaf water potential were measured throughout the study. Leaf &PSgr;, stem water potential (&PSgr;stem), stomatal conductance (gs) and transpiration (E) were measured between 31 August and 6 September, 2011.
520 $a Sap flow was measured using the Heat Ratio and Tmax methods in an attempt to directly correlate sap flow velocity and volume with vine water use. One sensor was installed per vine to make these measurements. It was found that while one sensor per vine was not enough to obtain a measurement of absolute water use, it was sufficient to analyze differences in sap flow patterns among cultivars. There were significant differences in sap flow among cultivars in 2010 and 2011. Significant differences among treatments were correlated with watering regime.
520 $a It has been shown by this research and that of others that the stomatal responses of Grenache and Syrah respond differently to water deficits than Cabernet Sauvignon and Petit Verdot. This study shows a pattern of near-isohydric behavior for Grenache in regard to gs, but is clearly anisohydric with regard to &PSgr;1, leading to a more anisohydric categorization than that of other researchers. It was found that Syrah exhibits a slightly lesser isohydric response than that of Grenache with regard to gs as well as a clear anisohydric response with regard to &PSgr;1, similar to the outcome of most other researchers. The anisohydric nature of Cabernet Sauvignon observed in this study has also been observed by several others. This study shows that Petit Verdot responds in an anisohydric manner to water stress similar to Cabernet Sauvignon. There were differences in &PSgr; 1 between cultivars that correspond to each cultivar's geographic origin.
520 $a There were no clear correlations between sap flow velocity and volume and the series of measurements of &PSgr;1, &PSgr;stem, gs and E made between 31 August and 6 September, 2011. This study showed that there were significant relationships between changes in sap flow in response to irrigation treatment and individual measurements of &PSgr; 1 throughout the season in 2010 and 2011. Shaded area showed a better correlation with differences in sap flow by cultivar in 2010 than in 2011.
590 $a School code: 0029.
650 4 $a Agriculture, Horticulture. $3 1017832
650 4 $a Agriculture, Plant Culture. $3 1018669
650 4 $a Biology, Botany. $3 1017825
690 $a 0471
690 $a 0479
690 $a 0309
710 2 $a University of California, Davis. $b Horticulture and Agronomy. $3 1676792
773 0 $t Masters Abstracts International $g 52-02(E).
790 $a 0029
791 $a M.S.
792 $a 2013
793 $a English
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