Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness
Bunch compactness is a key factor on the determination of grape quality. The use of qualitative visual systems for its determination is quite controversial, hindering some studies that require objective and quantitative measures of the trait. Here, eleven indexes published in literature and eight designed in this survey were tested with three different criteria to determine their usefulness for the estimation of bunch compactness. A sample of 110 grape bunches of different morphology, from 11 different varieties, were classified by a panel of 14 judges according to the visual OIV descriptor No 204. Besides, a number of measures were taken from the same bunches, which were used for the indexes' calculations. Several indexes designed here proved to be more suitable to obtain quantitative estimations for this trait in a genetically diverse set of varieties than the indexes previously published. Two of the selected indexes, CI-18 and CI-19, are based on the combination of six metrics from bunches (bunch weight, number of berries per bunch, number of seeds per berry, bunch length, first ramification length and either pedicel length or number of ramifications per bunch, respectively). These two indexes are more suitable for inter-varietal studies where obtaining quantitative data is critical. Other selected index (CI-12) is based on two easy-to-measure characteristics of the bunch (weight and length), and it is proposed as a fast estimator of bunch compactness for the viticulture sector.
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Julius Kühn-Institut
2014
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Subjects: | Bunch architecture, Compactness index, Bunch morphology, Bunch density, Vitis vinifera, |
Online Access: | http://hdl.handle.net/10261/114526 http://dx.doi.org/10.13039/501100003329 |
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dig-icvv-es-10261-1145262021-06-07T07:10:09Z Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness Tello, Javier Ibáñez Marcos, Javier Ministerio de Economía y Competitividad (España) Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera Bunch compactness is a key factor on the determination of grape quality. The use of qualitative visual systems for its determination is quite controversial, hindering some studies that require objective and quantitative measures of the trait. Here, eleven indexes published in literature and eight designed in this survey were tested with three different criteria to determine their usefulness for the estimation of bunch compactness. A sample of 110 grape bunches of different morphology, from 11 different varieties, were classified by a panel of 14 judges according to the visual OIV descriptor No 204. Besides, a number of measures were taken from the same bunches, which were used for the indexes' calculations. Several indexes designed here proved to be more suitable to obtain quantitative estimations for this trait in a genetically diverse set of varieties than the indexes previously published. Two of the selected indexes, CI-18 and CI-19, are based on the combination of six metrics from bunches (bunch weight, number of berries per bunch, number of seeds per berry, bunch length, first ramification length and either pedicel length or number of ramifications per bunch, respectively). These two indexes are more suitable for inter-varietal studies where obtaining quantitative data is critical. Other selected index (CI-12) is based on two easy-to-measure characteristics of the bunch (weight and length), and it is proposed as a fast estimator of bunch compactness for the viticulture sector. This work was financially supported by the project AGL2010-15694 from the MINECO (Spain). J. TELLO was funded by a pre-doctoral fellowship from the MINECO. Peer Reviewed 2015-04-29T13:02:28Z 2015-04-29T13:02:28Z 2014 2015-04-29T13:02:28Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0042-7500 Vitis - Journal of Grapevine Research 53(1): 9-16 (2014) http://hdl.handle.net/10261/114526 http://dx.doi.org/10.13039/501100003329 Publisher's version Sí open Julius Kühn-Institut |
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Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera |
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Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera Tello, Javier Ibáñez Marcos, Javier Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
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Bunch compactness is a key factor on the determination of grape quality. The use of qualitative visual systems for its determination is quite controversial, hindering some studies that require objective and quantitative measures of the trait. Here, eleven indexes published in literature and eight designed in this survey were tested with three different criteria to determine their usefulness for the estimation of bunch compactness. A sample of 110 grape bunches of different morphology, from 11 different varieties, were classified by a panel of 14 judges according to the visual OIV descriptor No 204. Besides, a number of measures were taken from the same bunches, which were used for the indexes' calculations. Several indexes designed here proved to be more suitable to obtain quantitative estimations for this trait in a genetically diverse set of varieties than the indexes previously published. Two of the selected indexes, CI-18 and CI-19, are based on the combination of six metrics from bunches (bunch weight, number of berries per bunch, number of seeds per berry, bunch length, first ramification length and either pedicel length or number of ramifications per bunch, respectively). These two indexes are more suitable for inter-varietal studies where obtaining quantitative data is critical. Other selected index (CI-12) is based on two easy-to-measure characteristics of the bunch (weight and length), and it is proposed as a fast estimator of bunch compactness for the viticulture sector. |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) Tello, Javier Ibáñez Marcos, Javier |
format |
artículo |
topic_facet |
Bunch architecture Compactness index Bunch morphology Bunch density Vitis vinifera |
author |
Tello, Javier Ibáñez Marcos, Javier |
author_sort |
Tello, Javier |
title |
Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
title_short |
Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
title_full |
Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
title_fullStr |
Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
title_full_unstemmed |
Evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
title_sort |
evaluation of indexes for the quantitative and objective estimation of grapevine bunch compactness |
publisher |
Julius Kühn-Institut |
publishDate |
2014 |
url |
http://hdl.handle.net/10261/114526 http://dx.doi.org/10.13039/501100003329 |
work_keys_str_mv |
AT tellojavier evaluationofindexesforthequantitativeandobjectiveestimationofgrapevinebunchcompactness AT ibanezmarcosjavier evaluationofindexesforthequantitativeandobjectiveestimationofgrapevinebunchcompactness |
_version_ |
1777670855718862848 |