Natural biodiversity is an underexploited sustainable resource that can enrich the genetic basis of cultivated plants with novel alleles that improve productivity and adaptation. We evaluated the progress in breeding for increased tomato (Solanum lycopersicum) yield using genotypes carrying a pyramid of three independent yield-promoting genomic regions introduced from the drought-tolerant green...

Beta carotene and lycopene, the two principal colored carotenoids present in tomato fruit, were measured in mature fruit of parental, F,, F2, and backcross populations derived from an initial cross of an orange-fruited accession of the wild tomato species Lycopersicon cheesmann Riley with the cultivated tomato L esculentum Mill. Segregation patterns for fruit pigmentation and percentage beta ca...

Opuntia ficus-indica is a long-domesticated cactus crop that is important in agricultural economies throughout arid and semiarid parts of the world. The biogeographic and evolutionary origins of this species have been obscured through ancient and widespread cultivation and naturalization. The origin of O. ficus-indica is investigated through the use of Bayesian phylogenetic analyses of nrITS DN...

A new technique for the production of hybrid strains of the cultivated mushroom Agaricus brunnescens is described. Homokaryons were recovered from regenerated protoplasts obtained from several heterokaryotic strains. A total of 16 novel hybrids were produced in 63 attempted crosses between paired homokaryons. Recovery of both homokaryons and hybrids was verified by analysis of restriction fragm...

Omnivorous endemic Canarian lacertids (Gallotia atlantica and G. galloti) do not present any speciŽ c digestive and physiological adaptations to herbivorous diet, compared to species and populations with a different degree of herbivory in the Canarian archipelago. The only characteristics that could be related to the type of diet were the number of cusps per tooth (between species) and the numb...

Yucca carrii, a new species from the northern Gulf Coastal Prairie of Texas is described. Morphology indicates that carrii belongs to Section Chaenocarpa (the dry-fruited yuccas). A lack observed fruit production date and reduced pollen viability this may be hybrid origin. The sole pollinator, yucca moth, has not been documented within species' range; it extirpated. Although known few populatio...

The article is devoted to the introduction and acclimatization of Ligustrum vulgare L. in Middle Urals since creation collection 1960. At that time, average annual temperature was only 1°C froze, grew again fruited favorable years. It possible create an population by families, but, nevertheless, 1998 all plants died from return cold weather frosts. study growth development privet has been resum...