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• Preliminary observations on winter-hardy Agave spp. in Hungarian rock garden

  55-59.

  K. Szabó-Mohácsi

  Views:

  366

  In the recent three decades several winter-hardy succulent collections were established in Hungary. These collections belong to winter-hardy cacti and their companion plants the agaves too. The agaves are much more rare than cacti and only few species can tolerate Hungarian climate conditions without any guard. When selecting the species, winter-hardiness has to be considered which includes all factors in the winter period. Observations were performed for frost resistant or winter-hardy Agave species in private collections. The recent paper gives information on 7 species of Agave and try to help the determination of the plants outside in the ground.

• Flower bud differentiation in apricot

  19-21.

  Sz. Németh

  L. Szalay

  M. L. Reményi

  Views:

  438

  The flower bud development is an especially complex process from initiation to blooming. Our main objective was to analyze paradormancy; the first stage of this process in our collection of varieties in the vicinity of Budapest, in Hungary. We have analyzed three varieties with different winter hardiness. `Ceglédi bíborkajszi' is one of the most frost susceptible in our collection of varieties, when the flower bud differentiation started in early August, and all flower organ initials evolved in beginning of September. The flower bud differentiation of the most winter hardy variety, `Rózsakajszi C.1406' started in the end of August, and all flower organs were noticed at middle of September. `Gönci magyar kajszi' is a medium frost hardiness apricot variety, its phenological process composes transition between two mentioned above varieties.