Full TGIF Record # 136259
Item 1 of 1
Publication Type:
i
Proceedings
Author(s):Sidak, V.; Segui, Esperanza; Pérez, C.
Author Affiliation:Estación de Pastos y Forrajes "Indio Hatuey", Perico, Matanzas, Cuba
Title:Variability in Panicum maximum Jacq. and some results of the selection
Section:Breeding and seed production of grasses and legumes: Variability, establishment of new initial material (mutation, interspecific and intergeneric hybridizations)
Other records with the "Breeding and seed production of grasses and legumes: Variability, establishment of new initial material (mutation, interspecific and intergeneric hybridizations)" Section
Source:International Grassland Congress, Proceedings. Vol. 1, 1977, p. 333-339.
# of Pages:7
Publishing Information:Zurich, Etc., V. P.
Keywords:TIC Keywords: Cultivar variation; Panicum maximum; Fertilization; Irrigation; Mowing frequency; Cultivar evaluation; Quality evaluation; Growth; Seed production; Proteins; Flowering date; Panicles; Germination; Thatch; Dry weight
Abstract/Contents:"The results of the first-year evaluation of 192 clones of Panicum maximum Jacq. are presented. The clones were collected in different regions of Cuba or introduced from foreign countries (71 % and 29%, respectively). The evaluation was carried out without fertilization nor water supply, each clone being represented per one row and each row divided into three sections, each one representing a particular treatment: (1) annual cutting; (2) cutting frequency of 6 weeks in the dry season and 4 weeks in the wet season; (3) cutting frequency of 8 weeks in the dry season and 6 weeks in the wet season. The evaluated biological parameters were vitality, yield, quality, increase growth, and seed production, a great variability being present in all of them. In respect to DM yield, 53%, 43% and 2% of the clones produced less than 1348, between 1348 and 1876 and between 1876 and 2405 g per plant per year, respectively. During the wet season 29% of the clones presented less than 10.5% of crude protein, 67% presented between 10.5% and 13.9%, and 4% presented between 13.9% and 17.2%. Most of the clones produced their major quantity of seed in October, although there is a great variability for flowering date, number of panicles per plant, number of seeds per plant, and germination percentage. High-yield clones were selected, the highest yields being 2405 g per plant per year and 342 g per plant in the dry season. The quality of those clones was acceptable: 17.6% of crude protein and 28.9% of crude fibre in the dry season, and 13.9% of CP and 35.9% of CF in the wet season. Supported by the obtained results, it was concluded that yields can be increased by 15% for the annual total and 8% for the dry season production, that growth dynamics can be affected by the frequency of cutting and that phenological stages are related to DM yields, by which reason they can be used to facilitate the selective process."
Language:English
References:13
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sidak, V., E. Segui, and C. Pérez. 1977. Variability in Panicum maximum Jacq. and some results of the selection. p. 333-339. In International Grassland Congress, Proceedings. Zurich, Etc., V. P.
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