상세정보
Export to Refworks부가기능
Drought Responses, Nutrient Uptake and Plant Growth of Southern Highbush Blueberry (Vaccinium corymbosum L.) in High pH Soils when Grafted onto Sparkleberry (Vaccinium arboreum Marshall)
상세 프로파일
| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Drought Responses, Nutrient Uptake and Plant Growth of Southern Highbush Blueberry (Vaccinium corymbosum L.) in High pH Soils when Grafted onto Sparkleberry (Vaccinium arboreum Marshall). |
| 개인저자 | Hernandez Perez, Maria Isabel. |
| 단체저자명 | University of California, Davis. Horticulture and Agronomy. |
| 발행사항 | [S.l.]: University of California, Davis., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 139 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-04B. Dissertation Abstract International |
| ISBN | 9781088300510 |
| 학위논문주기 | Thesis (Ph.D.)--University of California, Davis, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Advisor: Gilbert, Matthew E. |
| 이용제한사항 | This item must not be sold to any third party vendors.This item must not be added to any third party search indexes. |
| 요약 | Blueberry production has been growing dramatically due to increasing consumption of the fruit around the world. This has led to expansion of blueberry production into unsuitable places such as into areas with high pH soils. Blueberry (Vaccinium corymbosum) requires pH in the range of 4.5 to 5.5 for optimal growth. Thus, in alkaline soils such as the ones in California, it is necessary to acidify soils by sulfuric acid application, which generates extra costs and environmental impacts. Sparkleberry (Vaccinium arboreum), a wild species of the southeastern United States could be utilized as a high pH tolerant rootstock. The present dissertation was focused on evaluating the physiological aspects of the rootstock (sparkleberry) and scion (blueberry) combination, specifically, the drought tolerance, the nutrient dynamics and the mechanisms for nutrient uptake and translocation under high pH conditions. The evaluation was performed with southern highbush blueberry cultivars as they are commercially used for California production.In Chapter 1, it was found that grafting blueberry onto a sparkleberry rootstock altered blueberry water relations and drought responses. However, blueberry and sparkleberry had similarities, and blueberry showed a surprising desiccation tolerance. Blueberry, grafted or ungrafted, was also a conservative user of water which led to major stomatal limitations on photosynthesis. Although there were advantages in water relations when grafting blueberry onto sparkleberry, those advantages were not remarkable. The advantages consisted of higher stomatal conductance under all conditions, even under drought with a 10% advantage, showing that the effects of lack of irrigation are mitigated by the rootstock, presumably by avoiding soil water deficit as sparkleberry can access water deeper in the soil.Nutrient dynamics was investigated in Chapter 2, where it was observed that the leaf nutrient content and plant growth in blueberry were generally not altered by being grafted onto sparkleberry, except for a positive effect this grafting combination on the foliar nutrient concentration of the anions P, B and S and a variable effect for N in the scion. The general effect on anions may be due to differences in root biology, post uptake chemistry or xylem sap pH between rootstock and scion. Side shoots of the sparkleberry rootstock had almost double the leaf concentration of Mn, Zn and Fe compared to blueberry leaves sharing the same root system. The good nutrition in the rootstock shoots contrasted with deficiency in the scion and indicated that the deficiency symptoms of Fe in blueberry growing in high pH soils are not caused by limited nutrient uptake by the rootstock. Instead, a cultivar, a grafting or a scion characteristic must be ineffective |
| 일반주제명 | Plant sciences. Physiology. Agriculture. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
