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Table 3 Quantitative and qualitative description of the traces (of ovules or seeds) and the seeds extracted from the berries inspected at veraison for the investigated genotypes

From: Somatic variants for seed and fruit set in grapevine

Accession Berry size N of berries Berry diameter range (mm) N of traces N of seeds N of potentially vital seedsa Traces per berry Seeds per berry Observations
Corinto Nero Small 10 8.2 - 10.2 16 0 - 1.6 0 Very small traces. They were very soft, impossible to dissect because they fell apart. Traces completely absent in two berries out of ten
Corinto Nero Large 10 13.0 - 16.3 13 10 10 1.3 1.0 Despite all seeds were potentially vital, when dissected, some of them presented a degenerated endosperm. An embryo was observed in some seeds with a well-developed endosperm
Sangiovese Unique 10 12.2 - 14.2 0 24 24 0 2.4  
Aspirant Small 10 NA 23 0 - 2.3 0 Some traces were completely soft, while others showed a partially developed sclerenchyma
Aspirant Large 10 NA 29 0 - 2.9 0 In general, traces extracted from the biggest berries were more developed than those from smaller berries
Liseiret Small 10 NA 14 18 12 1.4 1.8  
Liseiret Large 10 NA 10 33 22 1.0 3.3  
Moscato Bianco mutant Small 10 7.0 - 8.4 0 0 - 0 0 Berries with no traces at all
Moscato Bianco mutant Large 2 13.8 - 17.0 0 4 4 0 2.0 Seeds presented a well-developed endosperm
Moscato Bianco Unique 10 13.0 - 16.6 0 19 19 0 1.9  
Termarina Rosa Small 10 7.0 - 8.2 32 0 - 3.2 0 Very small and soft traces, impossible to dissect because they were destroyed due to the reduced size and fragility
Termarina Rosa Large 10 8.2 - 9.9 24 0 - 2.4 0 Very small and soft traces, impossible to dissect because they were destroyed due to the reduced size and fragility
Termarone Unique 10 14.0 - 16.2 0 29 28 0 2.9  
Chasselas apyrène Small 10 11.2 - 14.1 27 0 - 2.7 0 Soft traces, heterogeneous in size. Some of them, despite being soft and with no well distinguishable structure inside, had the appearance of a seed on a reduced scale
Chasselas apyrène Large 10 14.5 - 16.8 8 15 4 0.8 1.5 The potentially vital seeds contained a well-developed endosperm. The seeds that floated where hollow inside, when dissected only seed coat and sclerenchyma structures were observed, while endosperm was usually not present (nor embryo) or was partly degenerated
Sultanina Unique 10 11.2 - 14.2 29 0 - 2.9 0 Soft traces, heterogeneous in size. A seed shape (pear shape) was observed for the biggest ones, which could also be longitudinally or transversally dissected. No sclerenchyma was formed and inside a very thin white tissue with an aqueous or gel-like consistency could be distinguished
Corinthe Noir Small 11 7.5 - 9.9 19 0 - 1.7 0 Traces were tiny and soft, it was impossible to dissect them because they were destroyed due to their reduced size and fragility
Corinthe Noir Large 3 12.5 - 17.3 5 4 1 1.7 1.3 Traces were similar to those of the smaller berries. Almost all inspected seeds were empty. One out of the four seeds presented an endosperm, but no embryo was observed
  1. Abbreviations: N number, NA not analyzed
  2. aBased on the floatation test: seeds that sank into water were considered potentially vital