Корелационен и Path анализ на добива и някои признаци свързани с продуктивността при линии зимен фуражен ечемик от var. pallidum
Дарина Димова • Милка Димитрова-Донева
Институт по земеделие - Карнобат, Карнобат, България
Резюме
The study was conducted during the period 2015-2017 at the Agricultural Institute
- Karnobat and includes 15 lines of winter forage barley from var. pallidum. The
materials studied are a selection of the institute’s genetic fund. The aim of this
study was to obtain information on the interrelationships between yield-related
Indicators and their direct and indirect effects on grain yields in winter barley from
var. pallidum. The experiment was carried out by block method, in 4 repetitions, at
the plot size of 10 m2. Veslets and Aheloi 2 varieties was the basic standards. Were
reporte: grain yield (kg/ha), number of tillers per plant, number of fertile tillers per
plant and plant height (cm), spike lenght (cm), number of sterile spikelets per spike,
grain number per spike, grain weight per spike (g), grain weight per plant /g/, 1000 grain weight (g), harvest index, %. The line K-3112-13 formed the largest number
of tillers - 5.0. With longest spike per plant was the line K - 3307 - 13 - 8.49 cm.
The line K - 4848 – 13 has the largest number of grains in spike - 59.10 numbers,
the smallest numbers of sterile grains - 9.52 and it also formed the highest yield
- 6990 kg / ha. The highest grain weight of one spike has the K - 3111-13 - 2.71
g. The same line formed the highest grain weight per plant - 9.70 g. The greatest
mass of 1000 grains holds the line K - 1724-12 - 44.90 g. The highest harvest index
had the K-3111-13 line - 55.71%. There was a proven positive correlation between
grain yield and fertile tillers per plant (r = 0.739) and the number of grains in spike
(r = 0.772). From the quantitative traits, with the greatest direct positive effect
on the yield were the number of fertile tillers per plant, number of grains and the
1000-grain weight.
Key words: Correlation, Elements of productivity, Path-analysis, Winter forage
barley var. pallidum