SU651758A1 - Method of sorghum selection - Google Patents

Description

(54) SARGO BREEDING COLLECTION

I

The invention relates to agriculture, in particular to the selection of agricultural plants.

Methods are known for the selection of synthetic varieties of different agricultural crops based on cytoplasmic male sterility by combining a number of inbreeding lines or clones that have been evaluated for their combination ability. As components of such varieties, fertile lines, clones or varieties are used, which, when combined into the original population to carry out random crossing, introduce an equal share of hybrids to the fund of the next l and 2j. However, the known methods for using mi on sorghum have such disadvantages as a low proportion of hybrid seeds, a decrease in the overall level of heterosis, and a decrease in yield due to a significant difference in parental forms from the hybrid progeny.

The aim of the invention is the creation of highly productive synthetic sorghum varieties.

The proposed sorghum selection method, in which genetically distant components are selected, sterile and fertile lines with high fixative and combining abilities, combine them into initial populations in equal ratios of seeds of fertile lines or varieties and sterile lines, are isolated during isolation. and high-yield synthetic varieties are isolated from them.

Example. To form an initial population that forms the basis of a synthetic variety, a highly productive sterile line is used, to which, based on an assessment of the overall combinational capacity, several best genetically distant fertile variety samples with a fixative ability and similar in their basic morphological characteristics, time of vevetenn and vegetatively 1H period are selected.

From each fertile soa |:) tobora: an equal amount of seeds is taken, to which seeds of a sterile line are added in a volume equal to the total number of seeds of fertile components. The material obtained after mixing is sown in an isolated area, where ordinary weeding is carried out. and removal in the case of the presence of diseased plants.

Solidly harvested seeds are used to study the productivity of a synthetic variety and further propagation.

According to the selected combinations, seed production is developed, taking into account the fact that the seeds of the sterile line need to be n times larger than fertile components (where O is the number of fertile lines ;.

A significant advantage of the proposed method is that it allows you to quickly and efficiently create high-yielding synthetic varieties with a high percentage of hybrid seeds, which does not decrease over the entire period of cultivation of the variety.

517584

Claims (2)

Formula in love The method of breeding sorghum based on cytoplasmic male sterile 5 and hybrid populations, with a t k ı s and k with the fact that, in order to create high-yielding synthetic varieties, genetically different components that are similar in phenotype } the sterile line and the formative lines or varieties possessing a high fixative and combinative capacity, then mergengues into the original populations, which are from the sterile line and totally equal to it in the number of seeds of fertile LINES or varieties taken in the same The ratios, WELL grows the populations with isolating and sows of them highly productive synthetic varieties. Sources of information taken into account in the examination l, N.K., Garter P.Z-JournaEof 25 Amer-ican Societv of Ag- -ohoni j, i9f9, v.f (, p E09. 2. Brigge F., Knowles P. Scientific bases of plant breeding. M., Kolos, 1972, p. 236-248.