ID | 47687 |
FullText URL | |
Title Alternative | Pericarp Characteristics of the F(1) Hybrid Medium-Fruited Tomato between the Male Sterile Mutant (T-4) of the Large-Fruited 'First' and a Small-Fruited Pure Line with Soft Pericarp
|
Author |
Toya, Junko
|
Abstract | Breeding for a soft pericarp in medium-sized tomato fruit was conducted by crossing the male sterile mutant (T-4) of the large-fruited 'First' and a small-fruited pure line with a soft pericarp (S). Pericarp characteristics of the F(1) hybrid (named MS-II) were compared with the parents and two similar medium-fruited tomato cultivars, 'Red ore' and 'Frutica'. Pericarp firmness in MS-II was lower as compared with that of both T-4 and S. Differences in pericarp firmness among MS-II, 'Red ore' and 'Frutica' were dependent on truss. In the first truss, MS-II developed fruits with a softer pericarp than 'Red ore', but with a firmer pericarp than 'Frutica'. In the second and third trusses, pericarp firmness of the fruit in MS-II tended to be lower than those of the other two cultivars. The thickness of the exocarp cuticle in MS-II was lower than that in 'Red ore', but was no different to that in 'Frutica'. Thus genotypic differences in pericarp firmness among MS-II, 'Red ore' and 'Frutica' seem to be derived from differences in the degree of cutin development in the epidermal perimeter. A thinner cuticle can explain pericarp softness in the fruits above the second truss in MS-II.
|
Abstract Alternative | 薄皮果柔の中玉トマト品種育成を目的とし,‘ファースト’花粉非崩壊型雄性不稔系統 (T-4) を種子親,果皮の軟らかい小果固定系統 (S) を花粉親とするF(1)雑種 (MS-II) の特性について,両親系統および既存の中玉F(1)品種‘レッドオーレ’,‘フルティカ’のそれと比較した.両親系統と比較したところ,MS-IIの果実硬度は花粉親である軟果皮Sと同等となり,果皮硬度はSよりも低い値となった.3段摘心栽培において,MS-IIの果実硬度は第1段では2品種と差は無かったが,上位果房ほど両品種よりも低くなる傾向を示した.果皮硬度は,第1果房では‘レッドオーレ’よりも低く,‘フルティカ’よりも高かったが,上位果房ほど両品種よりも低い値となる傾向を示した.MS-IIの外果皮におけるクチクラ厚を測定したところ,‘フルティカ’と同等となり,‘レッドオーレ’よりも低かった.また,MS-IIのクチクラ層の発達程度が2品種よりも低いことが観察され,MS-IIの果皮硬度が2品種よりも低い傾向を示すのは,外果皮におけるクチクラ層の発達程度が低いためと推測された.
|
Keywords | cuticle
fruit firmness
pericarp firmness
|
Note | 原著論文 (Original paper)
|
Published Date | 2012-02-01
|
Publication Title |
岡山大学農学部学術報告
|
Publication Title Alternative | Scientific Reports of the Faculty of Agriculture Okayama University
|
Volume | volume101
|
Publisher | 岡山大学農学部
|
Publisher Alternative | Faculty of Agriculture, Okayama University
|
Start Page | 19
|
End Page | 24
|
ISSN | 2186-7755
|
Content Type |
Departmental Bulletin Paper
|
language |
Japanese
|
File Version | publisher
|
Refereed |
False
|
Eprints Journal Name | srfa
|