Nerium cultivars (Nerium oleander L.)

The objective of this work was to study the different breeding systems, seed viability and seed germination in four nerium Cultivars (Nerium oleander L.). Different breeding systems like natural open pollination, autogamy, controlled pollinations and geitenogamy were studied in two seasons. In both the season of pollination no fruit set was observed in autogamy. In case of natural open pollination both the season of pollination up to five per cent of fruit set was observed in nerium cultivars.

11p nguathienthan5 04-06-2020 7 1   Download

The objective of this work was to study the reproductive biology in four nerium cultivars. Anthesis, anther dehiscence, stigma receptivity, flower and fruit morphology, pollen morphology and production, ovule production and pollen ovule ratio were studied. Anthesis in nerium cultivars started from 5.30 a.m. and reached the peak by 6.30 a.m. except in yellow cultivar (6.30 to 7.30 am). Nerium flowers are protandrous in nature and the anthers dehisced by longitudinal slit just before the anthesis. Anther dehiscence started at 5.30 a.m. and maximum anther dehisce was observed between 5.

16p trinhthamhodang3 12-02-2020 10 1   Download