The effect of mechanical stress created by pruning of lateral branches on sex expression in cucumber cultivar, “Sialkot Selection’ was examined. Seeds were sown in the field and after reaching the required number of lateral branches according to respective treatment, each new coming lateral branch were pinched off. The pruning treatments included; main stem without any lateral branches (T ) and...

• Both floral rewards and advertisements can be important in the attraction of pollinators, but few studies have separated the individual contributions of rewards and advertisements to fitness. • Here, we investigated selection by pollinators on individual blossoms in Dalechampia schottii. This Neotropical vine, endemic to the Yucatán Peninsula, rewards bees by secreting fully visible, deep-blu...

There is growing concern that current pollinator decline will affect the reproduction of plant species, potentially driving a decline in plant population densities. We experimentally tested whether a reduction in flower visitation caused a reduction in fertilization rate in several species, and whether any reduction in fecundity of species depends on their degree of reproductive dependence on p...

Greenhouse and laboratory studies were conducted to determine the identity and pathogenicity of Diaporthe– Phomopsis species complex recovered from eight weed species. The identifications of the eight isolates representing four taxa, including two apparently undescribed species of Phomopsis, were based on colony features in pure culture, morphology of alpha or beta-conidia, and internal transcr...

In order to examine the effect of the quantity of Nitrogen fertilizer and bush density on vegetative and productive function of henna medicinal plant (Lawsonia inermis)  factorial experimentation in the form of block plan was carried in three stages in agriculture research center in south of kerman  province in corp of 2012. The first factor containing Nitrogen fertilizer in 4 levels i...

In this study, the characteristics of tetraploid and diploid watermelon’s flowers, fruits, seeds were examined, their differences investigated. As plant material, ST101 ST82; WL92, WL124, WL134, WL216, WL259-B WL235 used. Flower (pollen viability, pollen germination, number anthers per anther flower); fruit (weight, length, diameter, rind thickness TSS) seed (weight 1000 seed, width, thickness,...

Melilotuis albus (alba) Desr. and M. officinalis (L.) Lam. are normally biennials flowering only in the 2nd year of growth. Under natural conditions the seeds germinate in the spring and the plants grow slowly during the first season, reaching a height of 1 to 2 feet. An enlarged storage root with a number of adventitious buds is formed in the fall and lives through the winter. In the second sp...

We map the extent, infer the life-cycle length and describe spatial and temporal patterns of flowering of sarmentose bamboos (Guadua spp) in upland forests of the southwest Amazon. We first examine the spectra and the spectral separation of forests with different bamboo life stages. False-color composites from orbital sensors going back to 1975 are capable of distinguishing life stages. These w...

Cleome viscosa L., an annual rainy season weed, is cosmopolitan in distribution. Two naturally growing populations of C. viscosa from Jammu, J & K, India have been studied for floral variation at an intra-plant level and its possible role in its life cycle. Plants of both the populations bear flowers which exhibit tremendous intra-plant variation in size (large and small) and sex (hermaphrodite...

Camptothecin and its derivatives are monoterpenoid indole alkaloids exhibiting significant anti-tumor actions. With the aim of improving the production of these pharmaceuticals, the contents of camptothecin and 10-hydroxycamptothecin in different tissues including roots, stems, leaves, young flower buds, opening flowers, fading flowers and seeds from Camptotheca acuminata, were investigated. Th...