Добірка наукової літератури з теми "Інбредні лінії кукурудзи"

Встановлено, що основні ознаки якості ґрануляр-ного крохмалю у кукурудзи на основі мутації SU2мають кількісну природу. Інбредні лінії на основіцієї мутації досить відмінні між собою за ефек-тами комбінаційної здатності щодо діаметракрохмальних ґранул, вмісту крохмалю в зерні таамілози в крохмалі. Діаметр крохмальних ґранул івміст крохмалю в зерні успадковувалися носіямимутації SU2 за типом позитивного наддомінуван-ня, а вміст амілози в крохмалі – за типом неповно-го домінування із суттєвим внеском до дисперсіїадитивних ефектів. It has been established that the general characters of granularstarch quality in the maize based on the mutation SU2 werenotable as having the quantitative nature. Inbreds – carriers ofthis mutation differ from each other in the effects of combiningabilities for the starch granules diameter, starch in the grain andamylose in the grain contents. The starch granules diameter andstarch content in the grain were inherited by the carriers ofmutation SU2 according to the type of positive over–dominance,and the content of amylose in the starch – according to the typeof incomplete dominance with the significant contribution ofadditive effects to the dispersion.

З’ясовано потенційні можливості інбредних ліній цукрової кукурудзи за продуктивністю і її складовими в умовах лісостепової зони України. Виявлено зразки з різним ступенем екологічної адаптації, що забезпечує виконання програм зі створення екологічно-орієнтованих гібридів. За результатами досліджень виділено цінні для практичної селекції генотипи та запропоновано шляхи їх подальшого використання в гетерозисній селекції даного підвиду кукурудзи. We clarified the potential of inbred lines of sweet corn by productivity and its components in conditions of Forest-Steppe zone of Ukraine. We revealed samples with varying degrees of environmental adaptation, that allows the execution to create an environmentally-oriented hybrid programs. According to the results of research we highlighted valuable genotypes for practical breeding and we offered the ways of their future use in heterosis breeding of this subspecies of corn.

The results of the study of inbred lines of corn on the basis of economically valuable features, such as: growing season, productivity, moisture yield. To distribute our maize material by precocity, a number of studies were conducted, namely: estimating the length of the growing season "shoots-full ripeness", which was determined in days, and a very important indicator-grain moisture at harvest as a percentage, it allowed to distribute two groups: early-maturing – (106–114) and middle-early – 114–123 days. Over the years of testing, the weather conditions varied considerably, which made it possible to evaluate the material under study in detail. In 2020, the growing season in the early-maturing group of lines was within 104.0 days, which is almost five days less in 2019. This trend was also observed for the group of middle-early lines. At the same time, the longer vegetation period was in 2019. Therefore, the aim of our study was to analyze the rate of moisture yield of corn grain of the studied lines of different maturity groups. The conducted researches allowed to trace the dynamics of grain moisture yield of corn lines of different maturity groups, to determine the variability of grain moisture of hybrids in different periods of grain maturation. 2019 was more favorable for growing corn, the plants formed a large vegetative mass, but the grain had a high humidity during the harvest period. This is due to a significant amount of precipitation (46.0 mm) in September 2019. Lines that had high harvest humidity were characterized by a long growing season, such as Um 337 and VIR 44. The group of the most productive included lines Um 337, Um 331, F7 and line MAN 053, which were ahead. The following year, Mind 337 and Mind 331 as a whole confirmed their positions, while F7 and MAN 053 yielded significantly lower yields.