Abstract
Our study was carried out in the region of Mossoró city, state of Rio Grande do Norte (Brazil), in February 2013. This experiment aimed to describe the phenology, estimate biometeorological indexes, and perform a chemical characterization of 'Itália Melhorada' grapes (Vitis vinifera L) grafted on three different rootstocks (cultivars: IAC 313, IAC572, and IAC766), during two production cycles and under semiarid conditions. The first cycle lasted 115 days, with a pruning performed on 04/19/2013; yet the second lasted 111 days, with a pruning on 09/25/2013. In the first cycle, the thermal sum required was 1258.27 DD (degree days), while in the second, it was 1290.50 DD. The Heliothermic Geslin Index (HGI) observed in the first cycle was 352.84 and, in the second, it was 371.17. The rootstocks had no influence on the evaluated factors (phenology, TTA, TSS, and STT/ TTA) in either of the two cycles, therefore, all the tested rootstocks can be used indistinctly, but still, the analysis revealed differences from one cycle to another in terms of TSS and TSS / TTA of berries.
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Claims 11
Claim · model-written summary
The first grape production cycle lasted 115 days.
Not reportedDirection
Verbatim
e0“The first cycle lasted 115 days, with a pruning performed on 04/19/2013; yet the second lasted 111 days, with a pruning on 09/25/2013.”
t0“grapes”
Claim · model-written summary
The second grape production cycle lasted 111 days.
Not reportedDirection
Verbatim
e0“The first cycle lasted 115 days, with a pruning performed on 04/19/2013; yet the second lasted 111 days, with a pruning on 09/25/2013.”
t0“grapes”
Claim · model-written summary
The first cycle required a thermal sum of 1258.27 DD.
Not reportedDirection
Verbatim
e0“In the first cycle, the thermal sum required was 1258.27 DD (degree days), while in the second, it was 1290.50 DD.”
t0“grapes”
Claim · model-written summary
The second cycle required a thermal sum of 1290.50 DD.
Not reportedDirection
Verbatim
e0“In the first cycle, the thermal sum required was 1258.27 DD (degree days), while in the second, it was 1290.50 DD.”
t0“grapes”
Claim · model-written summary
The first cycle Heliothermic Geslin Index was 352.84.
Not reportedDirection
Verbatim
e0“The Heliothermic Geslin Index (HGI) observed in the first cycle was 352.84 and, in the second, it was 371.17.”
t0“grapes”
Claim · model-written summary
The second cycle Heliothermic Geslin Index was 371.17.
Not reportedDirection
Verbatim
e0“The Heliothermic Geslin Index (HGI) observed in the first cycle was 352.84 and, in the second, it was 371.17.”
t0“grapes”
Claim · model-written summary
Rootstocks did not influence phenology in either cycle.
Not reportedComparator
Verbatim
e0“The rootstocks had no influence on the evaluated factors (phenology, TTA, TSS, and STT/ TTA) in either of the two cycles”
t0“grapes”
Claim · model-written summary
Rootstocks did not influence berry TTA, TSS, or STT/TTA in either cycle.
Not reportedComparator
Verbatim
e0“The rootstocks had no influence on the evaluated factors (phenology, TTA, TSS, and STT/ TTA) in either of the two cycles”
t0“grapes”
Claim · model-written summary
The authors conclude the tested rootstocks can be used interchangeably.
Not reportedDirection
Verbatim
e0“all the tested rootstocks can be used indistinctly”
t0“grapes”
Claim · model-written summary
Berry TSS differed between production cycles.
Not reportedDirection
Verbatim
e0“the analysis revealed differences from one cycle to another in terms of TSS and TSS / TTA of berries.”
t0“grapes”
Claim · model-written summary
Berry TSS/TTA differed between production cycles.
Not reportedDirection
Verbatim
e0“the analysis revealed differences from one cycle to another in terms of TSS and TSS / TTA of berries.”
t0“grapes”
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