Similar trends were obtained after other treatment periods.
All cultivars studied showed rather similar trends, in both
year 1 and in year 2 (data not shown), although with differing final levels for any chilling treatment (see Fig. 1c and d
for representative cultivars and bud stages). To ensure maximal development we only report bud development after
45 days’ warming (52 days for year 2) in all subsequent analyses. As expected, the percentage reaching later bud stages
(grape or flowers open) was smaller than for the earlier stages
of bud burst, since the scoring of the earlier stages included
all those buds reaching a later stage. Similar patterns of
response were found in year 2. It should be noted that the
very limited bud development in some cultivars (especially
‘Amos Black’ and ‘Andega’) reflected supra-optimal chilling
with the severe chilling treatment used for this particular
dataset, as shown below. Note that four-way anovas for any
bud stage indicated that all factors, and their interactions,
were highly significant (P < 0.001).
Similar trends were obtained after other treatment periods.
All cultivars studied showed rather similar trends, in both
year 1 and in year 2 (data not shown), although with differing final levels for any chilling treatment (see Fig. 1c and d
for representative cultivars and bud stages). To ensure maximal development we only report bud development after
45 days’ warming (52 days for year 2) in all subsequent analyses. As expected, the percentage reaching later bud stages
(grape or flowers open) was smaller than for the earlier stages
of bud burst, since the scoring of the earlier stages included
all those buds reaching a later stage. Similar patterns of
response were found in year 2. It should be noted that the
very limited bud development in some cultivars (especially
‘Amos Black’ and ‘Andega’) reflected supra-optimal chilling
with the severe chilling treatment used for this particular
dataset, as shown below. Note that four-way anovas for any
bud stage indicated that all factors, and their interactions,
were highly significant (P < 0.001).
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