The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.)
碩士 === 國立中興大學 === 園藝學系所 === 97 === The flowering seasons of Euphorbia spp. were investigated. Beside E. millotii blossomed from September to May, E. milii‘Olympus’, E. geroldii, and Euphorbia sp. ‘Thornless’ blossomed year round. The optimum sucrose concentration in medium for pollen germination wer...
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ndltd-TW-097NCHU53780162016-04-29T04:20:03Z http://ndltd.ncl.edu.tw/handle/56982214415698882778 The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) 無刺麒麟花(Euphorbiaspp.)雜交育種 Gi-Iau Wu 吳俊瑤 碩士 國立中興大學 園藝學系所 97 The flowering seasons of Euphorbia spp. were investigated. Beside E. millotii blossomed from September to May, E. milii‘Olympus’, E. geroldii, and Euphorbia sp. ‘Thornless’ blossomed year round. The optimum sucrose concentration in medium for pollen germination were tested. The medium containing 20% sucrose was suitable for E. geroldii pollen germination and 10% for E. milii ‘Olympus’, E. millotii and Euphorbia sp.‘Thornless’. Moreover, the optimum temperature for pollen germination of all treated ones was 25℃. The seed harvested from the cross of E. milii ‘Olympus’× Euphorbia sp. ‘Thornless’ were more than other cross combinations. The immature embryos of E. milii ‘Olympus’ × E. geroldii and E. milii ‘Supo Roek’ × E. geroldii were taken from ovaries after 7 days of crossing and could be rescued in the medium of 1/4 MS formula with better radical elongation rate. The thorns from the cross of E. milii ‘Olympus’× Euphorbia sp.‘Thornless’ progenies were less and softer. In cross of E. geroldii × E. milii ‘Olympus’, thorns of progenies were toothed but not harmful. Thorns from E. milii ‘Supo Roek’× E. geroldii progenies became softer and broken easily. Chien-Young Chu 朱建鏞 學位論文 ; thesis 58 zh-TW |
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碩士 === 國立中興大學 === 園藝學系所 === 97 === The flowering seasons of Euphorbia spp. were investigated. Beside E. millotii blossomed from September to May, E. milii‘Olympus’, E. geroldii, and Euphorbia sp. ‘Thornless’ blossomed year round. The optimum sucrose concentration in medium for pollen germination were tested. The medium containing 20% sucrose was suitable for E. geroldii pollen germination and 10% for E. milii ‘Olympus’, E. millotii and Euphorbia sp.‘Thornless’. Moreover, the optimum temperature for pollen germination of all treated ones was 25℃.
The seed harvested from the cross of E. milii ‘Olympus’× Euphorbia sp. ‘Thornless’ were more than other cross combinations. The immature embryos of E. milii ‘Olympus’ × E. geroldii and E. milii ‘Supo Roek’ × E. geroldii were taken from ovaries after 7 days of crossing and could be rescued in the medium of 1/4 MS formula with better radical elongation rate.
The thorns from the cross of E. milii ‘Olympus’× Euphorbia sp.‘Thornless’ progenies were less and softer. In cross of E. geroldii × E. milii ‘Olympus’, thorns of progenies were toothed but not harmful. Thorns from E. milii ‘Supo Roek’× E. geroldii progenies became softer and broken easily.
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Chien-Young Chu |
author_facet |
Chien-Young Chu Gi-Iau Wu 吳俊瑤 |
author |
Gi-Iau Wu 吳俊瑤 |
spellingShingle |
Gi-Iau Wu 吳俊瑤 The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
author_sort |
Gi-Iau Wu |
title |
The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
title_short |
The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
title_full |
The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
title_fullStr |
The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
title_full_unstemmed |
The Breeding of Thornless“ Crown of Thorns” (Euphorbia spp.) |
title_sort |
breeding of thornless“ crown of thorns” (euphorbia spp.) |
url |
http://ndltd.ncl.edu.tw/handle/56982214415698882778 |
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