Behavior of certain potato varieties in thermo-hydric stress conditions

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Article Title:	Behavior of certain potato varieties in thermo-hydric stress conditions
Authors:	Andreea Nistor , Nicoleta Chiru, Mihaela Cioloca, Monica Popa
Affiliation:	National Institute of Research and Development for Potato and Sugar Beet Brasov
Abstract:	Environmental stresses result in water deficiency for the plants, thus impairing its numerous biological roles. Taking into account the need for production of early potato for consumption, we considered it necessary to test potato varieties, installing experience in the greenhouse. Watering was discontinued after three weeks of starting tuberization. The biological material used was plantlets and microtubers. We used five potato varieties: Christian, Roclas, Astral, Magic, Loial. Loial and Christian varieties achieved the highest values of tubers number / plant (3.65, 2.45 minitubers/ plant). Average weight of minitubers was influenced by planting material and varieties tested, ranging from 19.97 g / minitub at Christian variety, and 6.17 g / minitub at Loial variety.
Keywords:	plantlets, microtubers, minitubers, thermo-hydric stress, greenhouse
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*Correspondence:	Andreea Nistor, National Institute of Research and Development for Potato and Sugar Beet Brasov, Romania, Department: Vegetal Tissue Culture, Street Fundăturii no 2, Postal code: 500470, Phone: 0268/476795, Fax: 0268/476608, email: nistorandreea06@gmail.com