BACKGROUND AND AIMS The primary physiological mechanism influencing tree vigour in size-controlling rootstocks of peach has been related to the hydraulic conductance of the rootstock. Differences in rootstock hydraulic conductance are a function of rootstock xylem vessel characteristics. The present research examined whether the vigour and xylem vessel characteristics of the rootstock influence...

This research explores the relationship between El Niño/Southern Oscillation (ENSO), captured by equatorial PaciŽ c Ocean Sea Surface Temperature (SST), and interannual variation in vegetation vigour in the southeast USA, captured by Advanced Very High Resolution Radiometer (AVHRR) Normalized DiVerence Vegetation Index (NDVI), for the period 1982–1992. The moving average and ‘baseline’ methods ...

Grape is one among the most delicious, refreshing and nourishing fruits of the world. It is one of the earliest fruits grown by man. The berries are a good source of sugars and minerals like Ca, Mg, Fe, and vitamins like B1, B2, and C. Grape has so many uses and is so unique that no fruit can challenge their superiority. Crop load is the most important factor affecting yield and cluster quality...

The Iberian viticultural regions are convened according to the Denomination of Origin (DO) and present different climates, soils, topography and management practices. All these elements influence the vegetative growth of different varieties throughout the peninsula, and are tied to grape quality and wine type. In the current study, an integrated analysis of climate, soil, topography and vegetat...

Predictable seedling establishment is essential for resource-efficient and cost-effective crop production; it is widely accepted as a critically important trait determining yield and profitability. Seed vigour is essential to this, but its genetic basis is not understood. We used natural variation and fine mapping in the crop Brassica oleracea to show that allelic variation at three loci influe...

Root pressure was measured continuously over spring in eight clonal kiwifruit rootstocks selected from seven Actinidia species (A. chrysantha, A. deliciosa, A. eriantha, A. hemsleyana, A. kolomikta, A. macrosperma, A. polygama), using pressure transducers and miniature compression fittings. Rootstocks that promoted scion vigour developed root pressures up to 0.15 MPa before or during scion budb...

Mature seeds of many crop species contain substantial amounts soluble carbohydrates, including raffinose family oligosaccharides (RFOs) and cyclitol galactosides (Gal-C). These substances are hydrolysed by α-D-galactosidase (EC 3.2.1.22) during the early stages germination, providing metabolic energy for germination process. A decrease or inhibition activity can significantly reduce rate. This ...

Seed storage experiment was carried out to investigate the most appropriate period of storing and preserving soybean seed quality under ambient conditions. Germination percentage, seed vigour, moisture content, 1000 seed weight, protein and oil contents were assessed before storage (control), three months (90 days) and six months (180 days) after storage. The results indicated that soybean seed...

Soil physical and chemical characteristics play a key role on vine growth yield. The soils of South Uruguay display high content montmorillonite or illite. proportion these minerals deserves special attention as they influence the soil structure its hydrological properties. present study was conducted in 1.1 ha vineyard this region (Canelones), characterized by heterogeneity plant vigour. It ai...