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The distribution and fate of arsenic in the Waikato River system, North Island, New Zealand
Arsenic levels were determined in waters, sediments, aquatic macrophytes and other organisms taken from the Waikato River system, North Island, New Zealand. All water samples contained elevated lev...
Producing quality seed: the problem of seed vigour.
The concept of seed vigour is discussed and how loss of vigour may occur during seed production and how vigour testing is yet to become accepted into the rules of the International Seed Testing Association. Expand
Seed Development in Phaseolus vulgaris L. cv Seminole: II. Precocious Germination in Late Maturation.
The results demonstrate the importance of endogenous regulation of water supply in suppressing precocious germination in vivo and identify ethylene as a powerful antagonist to the natural control. Expand
Germination requirements of New Zealand native plants : a review
There is an urgent need for research in seed biology if the New Zealand flora, much of it now endangered, represents a unique genetic resource to be conserved and maintained. Expand
Production problems facing the herbage seed industry in New Zealand with particular reference to ryegrass (Lolium spp.).
In New Zealand, production of herbage seed involves 35,350 ha, and is dominated by two species; ryegrass (Lolium spp.) and white clover (Trifolium repens). Profitability is primarily determined byExpand
Seed Development in Phaseolus vulgaris L. cv Seminole: I. Developmental Independence of Seed Maturation.
Defoliation and water stress treatments applied to Phaseolus plants reduced seed yields but allowed persistence of seed maturation processes such that all seeds developing to dryness were capable of germination. Expand
Assessment of germination and vigour status of 24‐year‐old seeds of a Sophora hybrid
The loss in germinability and viability of the 1977 seeds was accompanied by a loss in vigour of remaining viable seeds, suggesting cell membrane and cytoplasmic damage. Expand
Tissue-specific changes in remobilisation of fructan in the xerophytic tussock species Festuca novae-zelandiae in response to a water deficit.
The negative correlation between fructan and sucrose content, which indicates an inter-conversion depending on tissue water content, suggests that, in this species, fructans serve as a carbohydrate pool, while sucrose stabilises the meristem during extreme water deficit. Expand
Mercury and arsenic in trout from the Taupo Volcanic Zone and Waikato River, North Island, New Zealand
ABSTRACTMercury and arsenic levels were determined in the flesh and livers of rainbow trout (Oncorhyncus mykiss Richardson) and brown trout (Salmo trutta L.) from lakes of the Taupo Volcanic Zone,Expand