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RESULTS ON THE VARIABILITY AND CHARACTERIZATION OF THE FLOWERING PERIOD AT THE WALNUT GENOTYPES FROM THE RIFG PITESTI COLLECTION

2024; Editura Universitatii din Pitesti; Volume: 13; Issue: 25 Linguagem: Inglês

10.47068/ctns.2024.v13i25.011

2284-953X

Aurelian Valentin Untaru, M. Botu, Roxana Ionela Ștefan, Adelina Stan,

Plant and Fungal Interactions Research

At the walnut, the flowering period is variable depending on the variety. The flowering of female and male flowers on the same tree is offered over time, which favors dichogamy. This paper presents the results regarding the flowering period of 45 walnut accessions from the RIFG Pitesti collection. The results showed that, out of a total of 45 genotypes studied, 29 are protandrous (64.4%), 12 are protogynous (26.6%) and 4 are homogamous (9%). Regarding the flowering time, in the climatic conditions from RIFG Pitești, in the spring of 2023, at the walnut varieties studied, on average the beginning of flowering of the male flowers took place between the third decade of April and the first decade of May, in time what the beginning of the flowering of female flowers took place in about the same period, but a few days later. Thus, were noticed by early to middle flowering, varieties such as ‘Şuşiţa’, ‘Peştişani’, ‘Novaci’, ‘Recea’, ‘Secular’, ‘Schinoasa’, ‘Victoria’, ‘Vlădești’, and by medium to late flowering, varieties such as ‘Argeşan’, ‘Ciprian Ion’, ‘Geoagiu 265’, ‘Jupânești’, ‘Mihaela’, ‘Roxana’, ‘Sarmis’, ‘Sibişel 44’, ‘Velniţa’, ‘Orastie’. Also the foreign varieties (‘Hartley’ and ‘Tehama’) have noticed by late flowering.