sodininkystė ir daržininkystė 25(4)

experiment the differences in yield were observed, the total yield was not differentiated
(Table 5).
Table 5. The total yield (kg/tree) of ‘Jonica’ trees and their efficiency index (kg/cm 2
TCSA) as influenced by different rootstocks and year of study
5 lentelë. ‘Jonica’ veislës vaismedþiø suminio derliaus (kg/vaismedis) ir jo produktyvumo
indekso (kg/cm 2 KSP) priklausomumas nuo poskiepiø ir tyrimo metø
Treatment
Yield (kg/tree)
Veislës ir
Derlius, kg/vaismedis
poskiepio
derinys 1999 2000 2001 2002
Total, 1999-
2002
1999–2002 m.
suminis derlius
Efficiency index
Produktyvumo
indeksas, kg/cm 2
KSP
‘Jonica’/M.9 8.86 c 6.24 a 9.16 a 13.2 b 37.5 a 1.51 a
‘Jonica’/P 60 4.88 a 4.36 a 6.52 a 10.3 ab 26.1 a 1.40 a
‘Jonica’/M.26 6.04 ab 5.90 a 15.71 a 8.8 ab 36.4 a 1.20 a
‘Jonica’/P 22 7.82 bc 5.82 a 8.92 a 10.7 ab 33.3 a 2.96 b
‘Jonica’/P 59 7.50 bc 3.76 a 6.90 a 7.2 a 25.3 a 2.40 b
7.02 ab 5.21 a 9.44 b 10.03 b
This is in a line with the previous reports of Kviklys et al. (1999) and Skrzyñski
and Poniedziaùek (1999) who did not record any differences between rootstocks
M.9 and P 60. However, many authors (Baab, 1998; Czynczyk, 1998; Sùowiñski,
2001) pointed out that rootstock M.9 yielded better than P 22 and worse in comparison
to P 60. The most productive trees were those grafted on rootstocks P 22 and
P 59 (2.96 and 2.40 kg/cm 2 , respectively). Trees on rootstocks M.9, P 60 and M.26
were less productive, with the yield efficiency index of 1.51, 1.40 and 1.20 kg/cm 2 ,
respectively.
Table 6. Mean fruit weight (g) of ‘Jonica’ apples as influenced by
different rootstocks and year of study
6 lentelë. ‘Jonica’ veislës vaismedþiø vidutinës vaisiø masës (g)
priklausomumas nuo poskiepiø ir tyrimo metø
Fruit weight
Mean for
Treatment
Veislës ir
Vaisiaus masë, g
treatment
poskiepio derinys
Veislës ir poskiepio
1999 2000 2001 2002 derinio vidurkis
‘Jonica’/M.9 218 b 206 b 233 b 224 c 220 d
‘Jonica’/P 60 182 a 188 ab 227 b 192 ab 197 bc
‘Jonica’/M.26 196 ab 194 ab 214 ab 210 bc 204 c
‘Jonica’/P 22 169 a 163 a 195 a 186 a 178 a
‘Jonica’/P 59 178 a 169 a 194 a 202 abc 186 ab
190 a 185 a 214 b 204 b
58