in order to determine the effect of vernalization on phenology and development rate of canola varieties, an experiment was conducted at research farm of gorgan university of agricultural science and natural resources during 2005-2006. the experiment was a randomized complete block design arranged in split plot with four replications. six varieties of canola (option500, rgs003, hyola308, hyola60...

Effects of varying the time of stem injection of gibberellin A4/7 (GA4/7) on male and female flowering in potted grafts of Pinus sylvestris L. in a greenhouse were monitored in two consecutive years. Flowering results for each application time were correlated with phenological characteristics and abiotic factors in an attempt to find reproducible indicators of the most effective time of GA4/7 t...

In many plant species, the duration of the daily exposure to light (photoperiod) provides a seasonal cue that helps to adjust flowering time to the most favourable time of the year. In Arabidopsis thaliana, the core mechanism of acceleration of flowering by long days involves the stabilisation of the CONSTANS (CO) protein by light reaching the leaves, the direct induction of the expression of F...

Chusquea ramosissima is a native monocarpic bamboo species growing in subtropical forests of northeastern Argentina, which can dominate gaps and open forests in the region, particularly after human disturbance. This bamboo species started to flower in different areas of northeastern Argentina in 2001, with the flowering peak during 2002 and 2003 and small isolated flowering events still occurri...

abstract saffron (crocus sativus, l.) is one of the most important economical crops for khorasan farmers. almost all saffron yield in iran comes from khorasan provinces. first irrigation times is the crucial factors which affect the amount and quality of yield based upon an on farm investigation it was found that when air temperature reaches to 12 ۫c the most amount of flower is yielded. also it...