A5001793993- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Plant Reproductive Biology
- Postharvest Quality and Shelf Life Management
- Fermentation and Sensory Analysis
- Plant Pathogens and Fungal Diseases
- Plant biochemistry and biosynthesis
- Wine Industry and Tourism
- Plant Gene Expression Analysis
- Plant tissue culture and regeneration
- Garlic and Onion Studies
- Powdery Mildew Fungal Diseases
- Plant and animal studies
- Gender and Technology in Education
- Phytochemicals and Antioxidant Activities
- Flowering Plant Growth and Cultivation
- Agricultural pest management studies
- Growth and nutrition in plants
- Genetic and Environmental Crop Studies
- Plant Disease Management Techniques
- Plant Molecular Biology Research
- Online and Blended Learning
- Light effects on plants
- Irrigation Practices and Water Management
- Botanical Research and Chemistry
Motu Economic and Public Policy Research
2017
Plant & Food Research
2011-2015
Lincoln University
2004-2011
The effects of delayed winter spur-pruning on yield, yield components and fruit composition Merlot vines was evaluated within a commercial vineyard in Marlborough, New Zealand. Vines were spur-pruned, trained using vertical shoot positioning, trickle irrigated grafted to Kober 5BB rootstock. Delaying pruning from July (usual time Zealand) until up October (when apical shoots canes 5 cm long) resulted increases 93%, 63%, 82% over the three seasons experimentation. These reflected higher...
Environmentally-responsive genes can affect fruit red colour via the activation of MYB transcription factors. The apple B-box (BBX) gene, BBX33/CONSTANS-like 11 (COL11) has been reported to influence red-skin in a light- and temperature-dependent manner. To further understand role BBX genes, other members family were examined for effects on regulation. Expression 23 skin was analysed during development. We investigated diurnal rhythm expression anthocyanin biosynthetic activator, MYB10....
The vigour and precocity of trees highly influences their efficiency in commercial production. In apple, dwarfing rootstocks allow high-density plantings while precocious flowering enables earlier fruit Currently, there is a lack pear (Pyrus communis L.) that are equivalent to the high yielding apple rootstock 'M9'. For efficient breeding new Pyrus it crucial understand genetic determinants control precocity. this study we used quantitative trait loci (QTLs) analysis identify associated with...
Background and Aims: Variation in berry size is observed at harvest. Although the growth of seeded berries has been described, no such data are reported for seedless or live green ovaries that occur wine cultivars. This study describes individual relation to seed development. Methods Results: Regular measurements diameter described Pinot Noir Cabernet Sauvignon. Seeded had typical double sigmoid curves, whereas berries, which developed more slowly from midway through Phase I, continued grow...
Background and Aims: Spring freeze events can result in substantial grapevine yield losses many parts of the world. Understanding vine responses following early spring will aid development decision support systems for vineyards damaged by freezing temperatures. Methods Results: The date budburst spur-pruned Chardonnay vines was manipulated pruning time and/or application sodium alginate gel. A event occurred at bud swell/woolly bud, killing 33% developing shoots. Treatments that delayed...
Despite the extensive use of dwarfing rootstocks in commercial apple cultivation worldwide, it is presently unknown how different growing environments may modify first expression rootstock-induced scion. To address this, we measured growth and architectural development compound ‘Royal Gala’ trees grafted onto three vigour clonal (‘M27’, ‘M9’ ‘M793’), grown locations New Zealand. Detailed measurements were made over year after grafting study was repeated for a second year. Within each site...
Although grape yield is a direct consequence of flower development, few studies have examined the characteristics flowers and their impact on berry development. A novel tagging technique has been developed to trace development into berries investigate relationship between ovary diameter at flowering date capfall. Thirty basal inflorescence each two shoots per vine were tagged using color-coded lengths waxed dental floss. Flowers different diameters selected from positions across...
The availability of Pyrus rootstocks that reduce tree size, enhance precocity and are also easy to propagate is limited. In general, European pears considered a difficult-to-root species, this trait one the obstacles developing successful clonal for pear fruit production. Identifying parent which would be benefit in rootstock development programme. Using dormant hardwood cuttings, we compared propagation success rates 81 different cultivars, with 303 seedling population from communis ‘Old...
Grapevine rootstocks are known to influence canopy development, particularly the timing of budbreak and vigour, yield components fruit composition at harvest. The selection rootstock/scion combinations that best suit nuances environment will assist grower in achieving production goals. In 1991 a trial was planted evaluate performance 'Sauvignon Blanc' on five (Teleki 5C, 101-14 Millardet et de Grasset, Kober 125 AA, 3309 Couderc, & Schwarzmann) Rapaura region Marlborough, New Zealand....
Consistent spring budbreak is an important aspect of regular annual cropping in kiwifruit. In regions with insufficient winter chilling, hydrogen cyanamide commonly applied to promote even and high budbreak; however, use this chemical being phased out around the world because toxicity concerns. absence cyanamide, understanding factors influencing development individual shoots central creating pruning systems that optimise productivity. To elucidate effect bud orientation on floral shoot...
Knowledge of how rootstocks affect scion architecture and vigour in kiwifruit is limited, unlike for some fruit crops. For example, apple, dwarfing by âMalling 9â (âM9â) rootstock can be measured within the first two years following grafting. Architectural modifications imposed âM9â on include early shoot termination therefore less node neo-formation, fewer sylleptic shoots. Currently kiwifruit, there are no vigour-controlling that reduce ways similar to those apple. To elucidate...
Use of well-feathered trees when establishing an orchard promotes early cropping; however, many pear cultivars do not readily form sylleptic branches in commercial nurseries. Observations young the interspecific ‘PremP109’ suggest it has upright habit with minimal natural branching, which leads to slow canopy establishment. Plant growth regulators cytokinin-like activity have been applied a range fruit nurseries induce resulting trees. This investigation compared efficacy cyclanilide (CYC)...
The limited availability of a Pyrus-derived dwarfing rootstock, equivalent to apple’s ‘Malling 9’, limits the intensification modern pear orchards. As part search for Pyrus this paper examines diversity key rootstock traits in population 420 P. communis seedlings from cross between ‘Old Home’ and ‘Louise Bonne de Jersey’. were used as rootstocks, budded with scion ‘Doyenne du Comice’, rootstock-induced changes development phenotyped relating tree architecture flowering. rootstocks induced...
Postharvest oxidative stress in horticultural crops. Edited by D. M. Hodges. Published 2003 Food Products Press, 10 Alice Street, Binghamton, NY 13904–1580, United States (http://www.haworthpressinc.com). 280 p. ISBN: 1–56022–963–2 (softcover); 1–56022–962–4 (hardcover). Price: US$49.95 US$79.95 (hardcover) (email: orders@haworthpress.com). Soils for fine wines. By Robert E. White. Oxford University 198 Madison Avenue, New York, 10016, (http://www.oup.com). 279 p., hardcover. ISBN...