Adventitious rooting, whereby roots form from non-root tissues, is critical to the forestry and horticultural industries that depend on propagating plants from cuttings. A major problem is that age of the tissue affects the ability of the cutting to form adventitious roots. Here, a model system has been developed using Pisum sativum to differentiate between different interpretations of ageing. ...

Techniques of clonal selection, establishment of hedged stool-beds, and cutting propagation have been developed for Cunninghamia lanceolata (Lamb.) Hook. (Chinese fir) in Zhejiang Province, China, and clonal forestry has been implemented in a local programme based at Kaihua County Forest Farm. Cutting propagation and the maintenance of juvenility, and plantation performance of 102 clones in sin...

The objective of the present study was to analyze effect three factors as type seed, seed density and crop fertilization on yields commercial sweet potato roots cv. Jonathan. Four variables were analyzed: total root yield, non-commercial yield dry matter. experiment design a randomized complete block factorial arrangement 2Sx2Dx2F, with two levels in each factor: common basic 20 cm 40 spacing b...

The investigation was conducted on wet and dry seasons of Ethiopia during the year 2012/2013 at Wondo Genet Agricultural Research Center Nursery site. Four levels of cutting size and three levels of cutting positions were arranged in randomized complete block design with three replications. Data on seedling height, branch number/seedling, root number/seedling, root weigh/seedling, root length/s...

This study was conducted to investigate the effects of different IBA doses on rooting capacity of Cherry laurel (Prunus laurocerasus L.) types in greenhouse conditions under mist propagation unit in 2008 2009. This species has an economic and important value for medicinal and pharmaceutical industry. Determination of suitable conditions for cutting propagation of different types is too importan...

The investigation was conducted on wet and dry seasons of Ethiopia during the year 2012/2013 at Wondo Genet Agricultural Research Center Nursery site. Four levels of cutting size and three levels of cutting positions were arranged in randomized complete block design with three replications. Data on seedling height, branch number/seedling, root number/seedling, root weigh/seedling, root length/s...

Adventitious root formation in plant cuttings is influenced by many endogenous and environmental factors. Leaf photosynthesis during rooting of leafy cuttings in hard to root species can contribute to supply carbohydrates to the intensive metabolic processes related to adventious root formation. Light intensity during rooting is artificially kept low to decrease potential cutting desiccation, b...

This paper presents a preliminary experimental study of the performance of basic sparse matrix computations on the CM-200 and the CM-5. We concentrate on examining various ways of performing general sparse matrix-vector operations and the basic primitives on which these are based. We compare various data structures for storing sparse matrices and their corresponding matrix – vector operations. ...

Nitrogen mobilization, nitrogen uptake and growth of cuttings obtained from poplar stock plants fertigated with different nitrogen (N) treatments and sprayed with urea in autumn were studied. Stock plants propagated from poplar cuttings were trained to a single shoot and fertigated with 0, 5, 10, 15 or 20 mmol l(-1) N during the first growing season. In October, a subset of stock plants from ea...

Mini-cutting is the most common commercially used clonal propagation method in Brazil. However, several environmental interferences can impact this process, hindering production of propagules. Mini-tunnel have been to overcome these difficulties, allowing for an increase productivity mini-stumps and rooting mini-cuttings. This study aimed evaluate effect mini-tunnel models on mini-stump two hyb...