In vitro Morphogenesis From Seeds of Helianthus Annuus L.
نویسندگان
چکیده
منابع مشابه
Lipid Composition in Fast and Slow Germinating Sunflower (helianthus Annuus L.) Seeds
The physiochemical characteristics and lipid composition in fast and slow germinating sunflower (Helianthus annuus L.) seeds were studied. The quantity of phospholipids, glycolipids and sterols in cotyledons and embryonic axes in fast germinating seeds (FG embryo emerged within 24 h after sowing) increased progressively between the 1st 6th days after sowing (DAS) compared with the slow growing ...
متن کاملEnt-Kaurene Biosynthesis in Extracts of Helianthus annuus L. Seedlings.
Kaurene synthetase B activity (conversion of copalyl pyrophosphate to ent-kaurene) is readily detectable in crude cell-free extracts of 3- to 4-day old dark-grown sunflower (Helianthus annuus cv. Mammoth) seedlings, whereas little or no kaurene synthetase AB activity (conversion of geranylgeranyl pyrophosphate to ent-kaurene) can be found in these extracts under comparable assay conditions. A l...
متن کاملMorphogenetical Aspects in Helianthus Annuus L. during the Ontogenesis
Sunflower (Helianthus annuus) is annual plants native to Mexico and is valuable from economic, as well as from ornamental point of view. In this paper the edification of the primary and the secondary structure of the vegetative organs were followed during the ontogenesis. The root with primary structure is tetrarch, with four strands each of xylem and phloem that alternate with one another. In ...
متن کاملTOLERANCE OF SUNFLOWER (Helianthus annuus L.) TO IMAZETHAPYR
The response of RIMI [imazethapyr-tolerant (T)] sunflower (Helianthus annuus L.) hybrid and the local imazethapyr-sensitive hybrid "Zoltan" (S) was investigated under controlled conditions. Hybrids grown in pots were treated post-emergence with imazethapyr at the two pairs of leaves stage. Visual injury evaluation and vegetative parameters were recorded. ALS (acetolactate synthase) enzyme activ...
متن کاملCavitation fatigue and its reversal in sunflower (Helianthus annuus L.).
"Cavitation fatigue" is the increased susceptibility of a xylem conduit to cavitation as a result of its prior cavitation. It was investigated whether cavitation fatigue induced in vivo could be repaired in intact plants. Sunflowers (Helianthus annuus L.) were subjected to soil drought in the greenhouse. Native embolism and vulnerability to cavitation was measured in well-watered controls and a...
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ژورنال
عنوان ژورنال: Pakistan Journal of Biological Sciences
سال: 1999
ISSN: 1028-8880
DOI: 10.3923/pjbs.1999.1432.1434