Temperature Regulation of Growth and Endogenous Abscisic Acid-like Content of Tulipa gesneriana L

Temperature Regulation of Endogenous Gibberellin Activity and Development of Tulipa gesneriana L.

The changes in the contents of free and bound gibberellin-like activity (GA) of Tulipa gesneriana L. cv. Ralph during development under 2 temperature conditions were studied. The results show that the content of free GA of bulbs grown at 18 degrees increased by 67% over the initial level during development. The bound GA showed a slight initial increase and was followed by a rapid decrease. In c...

Low temperature sensing in tulip (Tulipa gesneriana L.) is mediated through an increased response to auxin.

Tulip (Tulipa gesneriana L.) is a bulbous plant species that requires a period of low temperature for proper growth and flowering. The mechanism of sensing the low temperature period is unknown. The study presented in this paper shows that the essential developmental change in tulip bulbs during cold treatment is an increase in sensitivity to the phytohormone auxin. This is demonstrated using a...

Combined Effect of Humic Acid and NPK on Growth and Flower Development of Tulipa gesneriana in Faisalabad, Pakistan

A research trial was conducted during 2011-2012 to elucidate the effects of humic acid (HA) and NPK to determine the optimum rate against different growth and floral attributes on tulip cultivar viz. ‘Triumph’. The following five treatments T0 : (control), T1: 10 g/m2 NPK (17:17:17), T2 : HA 0.75 ml (8%) + 10 g/m2 NPK (17:17:17), T3: HA 1.00 ml (8%) + 10 g/m2 NPK (17:17:17) and T4: HA 1.25 ml (...

Combined Effect of Humic Acid and NPK on Growth and Flower Development of Tulipa gesneriana in Faisalabad, Pakistan

Effects of abscisic acid mannitol and temperature on invitro storage of potato germplasm