The modified truncated Bt-cry1Ab gene of Bacillus thuringiensis has been used for the development and selection of over expressing transgenic events in a commercially important variety of tomato (Solanum lycopersicum L.) by Agrobacterium-mediated leaf-disc transformation procedure. The integration and inheritance of cry1Ab gene in T0 transgenic plants and their progenies were determined by PCR,...

The influence of seven plum rootstocks (Adesoto, Monpol, Montizo, Puebla de Soto 67 AD, PM 105 AD, St. Julien GF 655/2 and Constantí 1) on individual and total sugars, as well as on antioxidant content in fruit flesh of "Catherine" peaches, was evaluated for three years. Agronomical and basic fruit quality parameters were also determined. At twelve years after budding, significant differences w...

The purpose of mutation induction is to enhance mutation rate in a short duration in developing new plant varieties. The occurrence of spontaneous mutation frequency rate is very low and difficult to use in plant breeding. Traditionally mutations are induced by physical (e.g. gamma radiation) and chemical (e.g. ethylmethane sulfonate) mutagen treatment of both seed and vegetatively propagated c...

Most agronomical traits exhibit quantitative variation, which is controlled by multiple genes and are environmentally dependent. To study the genetic variation of flowering time in Brassica napus, a DH population and its derived reconstructed F(2) population were planted in 11 field environments. The flowering time varied greatly with environments; 60% of the phenotypic variation was attributed...

Transgenic plants represent an invaluable tool for molecular, genetic, biochemical and physiological studies by gene overexpression or silencing, transposon-based mutagenesis, protein sub-cellular localization and/or promoter characterization as well as a breakthrough for breeding programs, allowing the production of novel and genetically diverse genotypes. However, the stable transformation of...

Dormancy is a state of metabolic arrest that facilitates the survival of organisms during environmental conditions incompatible with their regular course of life. Many organisms have deep dormant stages to promote an extended life span (increased longevity). In contrast, plants have seed dormancy and seed longevity described as two traits. Seed dormancy is defined as a temporary failure of a vi...

Water shortage and heat are the most devastating abiotic stresses threating global food security. To understand behavior of germplasm under both stresses, thirteen rice genotypes were selected for study to make evaluation water stress condition. The results showed that year mean squares significant highly all agronomical traits except, flag leaf area, number tillers plant-1, panicles 100 grain ...

Soil salinity is one of the major constraints to crop production worldwide. The multifaceted nature tolerance traits complicates plant screening and identification salt-tolerant germplasm be used for genetic advancement corps. Many criteria have been suggested distinguish between genotypes. Most these were applied under controlled environmental conditions limited developmental stage plants. As ...

In temperate climates, bud break and shoot flower emission of deciduous fruit tree species are regulated by precise chilling heating requirements. To investigate this aspect, sixty-one accessions European pear (Pyrus communis L.) collected in Sicily were phenotyped for three consecutive years harvest date, sprouting blooming to determine both the requirements threshold temperature using Chill D...