Folia Horticulturae

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Characteristics of two different male sterile lines of sweet pepper (Capsicum annuum L.) with emphasis on hybrid seed production ability

Aleksandra Korzeniewska, Katarzyna Niemirowicz-Szczytt

Department of Plant Genetics, Breeding and Biotechnology
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warszawa, Poland

The study was aimed at evaluating two male sterile lines of sweet pepper (the line No 10ms containing ms8 gene and the line No 30 characterised by functional male sterility and chld marker gene) from the point of view of their applicability to hybrid seed production. The two male sterile lines were compared with the four male fertile lines (Nos 31-34) with respect to the following traits: fruit and seed yield, number of fruits per plant, weight of 1000 seeds, and germination ability. The results obtained appeared to be unexpectedly good for the line 10ms and quite average for the line No 30. It is possible to draw the following conclusions: (a) the yield of fruits and seeds of line 10ms was as good as that of the best male fertile lines; (b) the yield of seeds was highly dependent on the number of fruits per plant; (c) the pollination method had a significant effect on fruit and seed yield, natural out pollination being superior to hand pollination; (d) line 10ms produced fruits of "kapia" type (triangular) which cannot be accepted in commercial production in Poland.

It is suggested that the combination of the two male sterile lines could bring about favourable results by producing a new form (containing ms8 gene, chld marker gene and an optimal shape of fruits) which would satisfy all the requirements.

Korzeniewska A., Niemirowicz-Szczytt K., 1998. Characteristics of two different male sterile lines of sweet pepper (Capsicum annuum L.) with emphasis on hybrid seed production ability. Folia Horticulturae 10/1: 15-25.