ISSN:
1871-4528
Keywords:
S. tuberosum
;
S. Phureja
;
anther culture
;
4x−2x hybrids
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Diffusive leaf resistance and transpiration rate were assessed in various potato genotypes includingS. tuberosum cvs. Atlantic, Cara, Alpha and Désirée,S. phureja clone PP5, a hybrid of Atlantic X PP5, and two anther-derived tetraploids of PP5. Resistance and transpiration were assessed with an LI-1600 steady state porometer on well-watered plants and differences in leaf resistance and transpiration rate among genotypes were obtained. These results imply that water economy may be improved by genotypes exhibiting small water losses. Transpiration rates calculated by dividing the weight of water transpirted per second by the area of the plant's leaflets, were lower than transpiration rates of young expanding leaflets assessed with the porometer. Nevertheless, the relative differences among genotypes were evident and a similar relationship among genotypes was maintained in the two measures. Cv. Alpha had lower transpiration rates, compared to Cara and Désirée, corresponding with its greater stomatal resistance.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02357839
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