Trees need to store reserves to allow their survival during winter and for bud flush and leaf growth in the following spring. In many tree species, these reserve functions are mainly covered by starch, which is degraded to soluble carbohydrates during the dormant season for maintenance respiration and in spring during bud flush. We conducted girdling experiments on poplar (Populus deltoides x n...

An antifungal activity of the twelve plant extracts were tested against Pythium sp., causal agents root rot diseases grown in hydroponic systems. The crude Acorus calamus and Syzygium aromaticum completely inhibited mycelial growth sp. vitro condition at 5,000 ppm, whilst Curcuma zedoaria other had show lesser inhibitory activity. Out these selecting A. calamus, S. C. for further vivo test nurs...

Zingiber zerumbet Smith is an important herb that contains bioactive phytomedicinal compound, zerumbone. To enhance cell growth and production of this useful compound, we investigated the growth conditions of cell suspension culture. Embryogenic callus generated from shoot bud was used to initiate cell suspension culture. The highest specific growth rate of cells was recorded when it was cultur...

Reactivation of dormant meristems is of central importance for plant fitness and survival. Due to their large meristem size, potato (Solanum tuberosum) tubers serve as a model system to study the underlying molecular processes. The phytohormones cytokinins (CK) and gibberellins (GA) play important roles in releasing potato tuber dormancy and promoting sprouting, but their mode of action in thes...

Coffee plants can be micropropagated by nodal bud sprouting using the 6-benzylaminopurine (6BA) hormone. However, literature reports the use of a wide range of 6-BA, from 0.5 to 88.8 μM L-1. So, this study was performed to narrow that range. Nodal explants of Coffea arabica cv Mundo Novo obtained from in vitro plantlets were inoculated on gelled-MS medium supplemented with different concentrati...