Abstract
Two experiment were carried out on Helichrysum bracteatum L. plant at the Experimental nursery of the Ornamental Hort. Dept., Fac. Agric., Cairo Univ., Giza, Egypt, during the two successive seasons (2014/15and 2015/16). The aim of this study was to investigate the effect of gamma irradiation flowering parameters and anatomical structure of leaves and flowers in two generations (M1and M2).The obtained results showed the following: Seeds of H. bracteatum L. were exposed to eight doses of gamma radiation (5-40 Gy). The low doses of gamma radiation increased No. of flowers and flowers diameter per plant in M1 and M2. Were obtained on many morphological variations in flowers color and leaves shape through two generations with doses 15, 20, 25, 30 and 35 Gy. Some flowering parameters and anatomical structure of leaves and flowers and to confirm the stability of some of the mutations were obtained during the second season. The variants of these selections were selection from plants treated with (15, 20, 25, 30 and 35 Gy) of gamma rays.
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Claims 5
Claim · model-written summary
Low gamma doses increased flower number in M1 and M2.
- Taxon
- Helichrysum bracteatum L.
Xerochrysum bracteatumt0 - Organ / stage
- flowerse0
- Treatment
- low doses of gamma radiatione0
- Outcome
- No. of flowerse0
- Direction
- increasede0
- Qualifier
- in M1 and M2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low doses of gamma radiation increased No. of flowers and flowers diameter per plant in M1 and M2.”
t0“Helichrysum bracteatum L.”
Claim · model-written summary
Low gamma doses increased flower diameter in M1 and M2.
- Taxon
- Helichrysum bracteatum L.Xerochrysum bracteatumt0
- Treatment
- low doses of gamma radiatione0
- Outcome
- flowers diametere0
- Direction
- increasede0
- Qualifier
- in M1 and M2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low doses of gamma radiation increased No. of flowers and flowers diameter per plant in M1 and M2.”
t0“Helichrysum bracteatum L.”
Claim · model-written summary
Gamma doses of 15 through 35 Gy produced flower-color variation over two generations.
- Taxon
- Helichrysum bracteatum L.Xerochrysum bracteatumt0
- Treatment
- doses 15, 20, 25, 30 and 35 Gye0
- Outcome
- morphological variations in flowers colore0
- Qualifier
- through two generationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“many morphological variations in flowers color and leaves shape through two generations with doses 15, 20, 25, 30 and 35 Gy.”
t0“Helichrysum bracteatum L.”
Claim · model-written summary
Gamma doses of 15 through 35 Gy produced leaf-shape variation over two generations.
- Taxon
- Helichrysum bracteatum L.Xerochrysum bracteatumt0
- Treatment
- doses 15, 20, 25, 30 and 35 Gye0
- Outcome
- leaves shapee0
- Qualifier
- through two generationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“many morphological variations in flowers color and leaves shape through two generations with doses 15, 20, 25, 30 and 35 Gy.”
t0“Helichrysum bracteatum L.”
Claim · model-written summary
Some mutations appeared stable in the second season.
- Taxon
- Helichrysum bracteatum L.Xerochrysum bracteatumt0
- Outcome
- stability of some of the mutationse0
- Qualifier
- during the second seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to confirm the stability of some of the mutations were obtained during the second season.”
t0“Helichrysum bracteatum L.”