The improper description and classification of two Polish cultivars of China ('Roma' and 'Srebrzysta Gwiazdka') were corrected. A new type of ray florets with -ligulated (RJ type) and closed tubular (RC type) corollas was described. The f heredity of the above mentioned types of florets and florets with ligulated , was determined. The work is based on aur own material: radiomutant MG and its offspring as well as the FI and F2 generations of hybrids obtained after crossing there cultivars: 'Goplana' x 'Roma' and 'Goplana' x 'Srebrzysta Gwiazdka' (i.e. J type x RC type). It was observed that the RJ type of corollas did not remain in the type. In ring of plants with such florets, always three types of segregants were present: plants with ray florets with ligulated, tubular - ligulated and tubular corollas. It was t it corresponds to the 1:2: 1 ratio. It means that the formation of the RJ type corollas results from the presence of both alleles in the heterozygote. It was proposed le gene conditioning the ligulated corolla form with the symbol L, (from Liguliformes) and the total corolla accretion with the symbol 1t,. Thus the described phenotypes correspond to the following genotypes: L,L, - determines the appearance of ligulated corollas, Lt,lt, - tubular - ligulated corollas and 1t,1t, - closed tubular carollas.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.