This article describes the hybrid of Oshima I2N2 (Morus bombycis Koidz.) × SANIISH-25 (Morus multicaulis Perr.), Obtained by
crossbreeding of mulberry tree, which is widely used in production in Uzbekistan. The specificity of the variety and the development of each clone were studied in the process of different effects on the growth and development of mulberry in standard nutrient media in vitro from the selected Jarariq 9 varieties. Our study found that when we planted 3 clones in a new environment, leaving one joint, the third apical part grew better than the 2nd medium clone, but the 3rd clone growth and root rate, which was cut close to the 3rd nutrient medium, was higher than the 1st and 2nd clones
In the country, where silkworm rearing seasons are carried out, live cocoon farmers and specialized farms do not pay attention to the
use of environmental factors in the feeding area and the amount of feed in accordance with the requirements of agricultural technology.
As a result, negative changes were observed in the development of mulberry silkworms, as a result of which the cocoon yield from box 1 worms was reduced to 34-44 kg compared to the comparative variant
There is no difference in performance in systems with plus and minus selection. In the F-1 and F-3 systems where viability plus selection
was performed, cocoon weight values were 1.84 g and 1.85 g, and shell weights were 432 mg and 422 mg, respectively. In practice, the minus selection does not differ from those of the conducted F-2 and F-4 systems-1.72 g and 1.85 g, respectively; 394 mg and 420 mg. Clearly, the choice of viability leads to the accumulation of recessive hemispheric and subletal genes in the homozygous state in the system. As a result, some organisms die at different stages of development. But some of them survive. Probably on the one hand, because harmful genes are less accumulated, and on the other hand, because there are enough positive genes to compensate for the
effects of harmful genes, i.e., the GCC is formed. Had this process not taken place, no doubt the system would have perished as a result of negative selection over several generations. It follows that GCC does not occur in systems with high viability. The predominance of
positive genes over negative genes is achieved without them. In addition, the process of mutation is accelerated under the influence of negative selection.
Thus, not only the reserve but also the newly emerging genes remainthe source for the blocks of both categoriesThis increases gene diversity
Помимо общих сведений о ореховом дереве, в книге представлены ореховый лист и его состав, а также применение грецкого ореха в медицине, средство от каких болезней он является и какие изделия изготавливают из листьев грецкого ореха. В этой статье также рассказывается о наркотиках в мире.
В данной статье кратко описаны коннотативные значения лексических единиц, используемых в поэзии Рауфа Парфи. На примере стихотворений поэта исследуется выражение коннотативного значения в стихотворениях поэта лексическими методами.
Maqolada shifobaxsh Momordika o'simligini botanikasi, morfologiyasini bilish orqali bu o'simlik bilan yaqindan tanishamiz. Bundan tashqari ushbu maqolada Dorivor momordikaning kelib chiqish tarixi ham o'rin olgan.