PRODUCTION OF TRIPLOID HYBRIDS OF BRASSICA BY EMBRYO CULTURE

Effect of silver nitrate on anther culture embryo production of different Brassica oleracea morphotypes

The effect of three concentrations of silver nitrate on anther culture embryo production was studied in 27 morphotypes of Brassica oleracea. Embryo yields were significantly increased in the majority of the morphotypes by the addition of silver nitrate to the media. Embryo yields were not increased in only a few of the almost nonembryogenic accessions. The magnitude of the response to silver ni...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Interactive Effects of Heat Shock and Culture Density on Embryo Induction in Isolated Microspores Culture of Brassica napusL. cv. Global

Successful Establishment of In Vitro Cultures of Prunus cerasifera Hybrids by Embryo Culture of Immature Fruits

Rapid obtaining of clonal plants is desirable to shorten crossing programs in fruit tree breeding. In this work, seedling germination and multiplication in vitro allowed us to establish successful in vitro cultures of hybrid seedlings. As a part of a breeding program in apricot rootstocks, we have obtained interespecific hybrid seeds after cross-pollination: myrobalan x apricot (Prunus cerasife...

Spontaneous Chromosome Aberrations in Triploid Tradescantia Hybrids.

T HAS recently been found that chromosome aberrations of the types I induced by various kinds of radiations occur spontaneously during the development of the pollen grains in diploid species and especially in species hybrids of Tradescantia (GILES 1940). The present studies have shown that the frequency of these aberrations is even higher in triploid Tradescantia hybrids. Furthermore, it has be...