The anti-senescence biogenic polyamines (PAs) putrescine (Put), spermidine (Spd) and spermine (Spm) are involved in plant growth processes and responses to stress. The physiological mechanism of exogenous Put to affect the senescence of cut lisianthus flowers during vase life was investigated. Fresh cut lisianthus flowers were treated with distilled water (control), 0.5, 1 and 2 mM Put and then...

Nous présentons une réalisation purement fonctionnelle et paresseuse de la technique du mode inverse de différentiation algorithmique. Cette technique, qui permet de calculer de manière précise et efficace les dérivées des expressions numériques dans un programme, est devenue indispensable dans plusieurs branches de programmation scientifique. Le mode inverse ou adjoint demande souvent l’usage ...

 Increasing quality and vase life of cut flowers play vital role in flower production industry. . Lisianthus (Eustoma grandiflora cv. Echo) has short vase life and it has been revealed that ethylene directly affect the initiation and process of senescence of petals. In this study, the effects of Silver and silicon nanoparticles with four concentrations of 0, 10, 20 and 40 mg L-1 with 4% sucrose...

the present study has assessed the effect of cola in increasing flower longevity of flower and delaying aging of cut alstroemeria ‘balance’. distilled water was used as control. traits of flower diameter, solution absorption ,anthocyanins, total soluble solids and chlorophyll were measured at 3 times and vase life was measured daily. based on the results, flower diameter, anthocyanins and chlor...