The banana aphid, Pentalonia nigronervosa Coquerel, is present worldwide where banana (Musa spp.) is grown. It is the vector of Banana bunchy top virus (Nanoviridae, Babuvirus), the etiological agent of banana bunchy top disease, currently the most important constraint for banana producers in Hawaii. P. nigronervosa is not well studied, and effects of temperature on its growth and reproduction ...

An attempt was made to identify the role of peroxidase activity as well as the changes of peroxidase (POX) isozymes that control adventitious root formation at the base of hypocotyl cuttings of mung bean (Vigna radiata L. cv. 105). Three phases of the adventitious root formation process were identified; induction (0-24 h), initiation (24-72 h) and expression (after 72 h). The lower peroxidase a...

Gymnema sylvestre R.Br. is an important medicinal plant which grows wild in the tropical forests of central, western and southern India and in the tropical areas of Africa, Australia and China. Due to increase in demand and destructive harvesting, the plant has become vulnerable. Field experiments were conducted during 2004 to 2007 to develop some important aspects of cultivation techniques of ...

We characterized a Pinus radiata D. Don putative ortholog to the Arabidopsis thaliana (L.) Heynh. SHORT-ROOT gene (AtSHR) and analyzed its expression in different organs during vegetative development and in response to exogenous auxin during adventitious rooting. The predicted protein sequence contained domains characteristic of the GRAS protein family and showed a strong similarity to the SHOR...

Current streambank restoration efforts focus on providing bank stability, enhancing water quality, and improving woody habitat using native vegetation rather than traditional engineering techniques. However, in most cases harsh site conditions limit restoration success. A two-year field study was conducted at Twentymile Creek, in northern Mississippi, investigating edaphic factors governing the...

We revisit a classical problem in computational geometry that has been studied since the 1980s: in the rectangle enclosure problem we want to report all k enclosing pairs of n input rectangles in 2D. We present the first deterministic algorithm that takes O(n logn + k) worst-case time and O(n) space in the word-RAM model. This improves previous deterministic algorithms with O((n logn+ k) log lo...

objective: in order to study the effect of different concentrations of iba hormone on rooting of olive cuttings in spring and winter of 2012-2013 in a greenhouse in jiroft, iran. methods: a split-plot experiment was conducted on the basis of a randomized complete block design in which hardwood cuttings of one-year-old olive plants cv. manzanilla with the diameter of 0.7-1 cm were used. the main...

This research was carried out in Southeast of Tunisia in 2009 and 2010, in order to study the propagation of six (Ficus carica L.) cultivars by using hardwood cuttings under the field conditions. The effect of the cultivars and the type of buds, shoots age, shoots length, and shoots diameter were recorded. Ten cuttings per cultivar and/or cutting types with three replications were planted in ro...

Black willow ( Salix nigra ) uses periodic flood events for dispersal of vegetative propagules, subjecting them to periods of soaking before their deposition along the streambank. It was hypothesized that this life history trait results in optimal conditions for willow growth and survival. To test this hypothesis, a greenhouse experiment was conducted using 1.2-m-long black willow cuttings (pos...

Dillenia pentagyna belongs to family Dilleniaceae, is commonly known as Karkat. It is small deciduous tree reaching up to the height of 10-12 m with a straight bole. The species is distributed throughout in India including Andaman & Nicobar. It is highly important medicinal tree species. Its leaves, fruits and bark show antibacterial, antialpha glucosidase and antioxidant property. Due to its h...