METHOD FOR IDENTIFYING SORTS AND/OR HYBRIDS OF FRUIT AND BERRY CROPS PROVIDING HIGH AND STABLE YIELD Russian patent published in 2005 - IPC

FIELD: agricultural and research enterprises, in particular, selection works.

SUBSTANCE: method involves numerating sorts and/or hybrids; calculating, with regard to each sort and/or hybrid (for period of time of at least three years), yield difference of subsequent and previous years for entire research period; finding total of resultant yield difference for each sort and/or hybrid, average yield value and yield variation coefficient for fruit-bearing phase of research period; calculating average yield value; ranging sorts and/or hybrids by reducing average yield values and excluding therefrom sorts and/or hybrids which have given yield below average yield over the entire combination of sorts and/or hybrids; laying total of yield differences in Cartesian system of coordinates on abscissa axis and yield variation coefficient for accounted fruit-bearing years on ordinate axis; marking points with respective coordinates by setting their numbers; calculating average value of resultant yield variations and yield variation coefficient of remained sorts and/or hybrids and marking their value in the form of point; drawing mutually perpendicular straight lines through this point. Points falling into lower fourth quadrant counted in clockwise direction, beginning from lower left-hand angle, comprise numbers corresponding to sorts and/or hybrids with high and stable yield.

EFFECT: increased efficiency in identifying sorts and hybrids of fruit and berry crops providing high and stable yields.

2 cl, 2 dwg, 2 ex