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Pollen productivity and morphology of pollen grains in two cultivars of honeyberry [Lonicera kamtschatica [Sevast.] Pojark.]

100%

Bozek M.

Acta Agrobotanica

2007

tom 60

nr 1

In the years 2004-2006, investigations on the abundance of pollen production in two cultivars of Lonicera kamtschatica (Sevast.) Pojark. - Atut and Duet, were conducted at the Felin Experimental Farm of the Agricultural University in Lublin. Moreover, the viability of pollen grains was estimated and measurements of their size were taken. Ten flowers of both studied cultivars supplied 11.42 mg of pollen and the average pollen productivity per 1 ha of a several-years-old plantation was 30.04 kg. The pollen of the observed plants was eagerly collected by honey bees. Pollen grains of both cultivars are suboblate. Considering their size, they can be described as large ones (P=47.55 µm, E=60.37 µm). Pollen viability for both cultivars is high, about 95%.

Structure of trichomatous nectaries in flowers of Lonicera kamtschatica [Sevast.] Pojark.

100%

Weryszko-Chmielewska E., Bozek M.

Acta Agrobotanica

2008

tom 61

nr 1

The structure of the fl oral nectaries of Lonicera kamtschatica was examined using light microscopy, scanning electron microscopy and transmission electron microscopy. Nectariferous tissues are located in the lower portion of the corolla tube. It was found that the secretory tissue of the nectary was composed of two layers of epidermal formations: short papillae and about 3x longer unicellular trichomes. They cover the adaxial surface of a small spur. Nectar secretion takes place through the apical portion of the trichomes and papillae. The cell wall of the upper part of the trichome has protuberances participating in nectar transfer to the subcuticular space which reaches large dimensions. The lateral walls of the trichomes are saturated with cutin. The papillae have much thicker walls than the trichomes. In the papillae, there are no wall protuberances. Less secretion accumulates in the subcuticular cavities of the papillae than in the trichomes.

Ograniczanie wyników

2 Acta Agrobotanica

2 Bozek M.

1 Weryszko-Chmielewska E.

1 2008

1 2007

Wyniki wyszukiwania

Pollen productivity and morphology of pollen grains in two cultivars of honeyberry [Lonicera kamtschatica [Sevast.] Pojark.]

Structure of trichomatous nectaries in flowers of Lonicera kamtschatica [Sevast.] Pojark.