亞熱帶甘藍育種方法與純度之探討

Perspectives for Cabbage Breeding Methods in Subtropical Lowland and Seed Purity

王仕賢(Shyh-Shyan Wang) ； 謝明憲(Ming-Hsien Hsieh)

《植物種苗》 6卷4期 (2004/12) Pp. 1-6

https://doi.org/10.30077/SN.200412.0001

摘要

傳統育種方法以結球後開花以確保親本純度，而種子到種子(Seed to Seed method)多用於經濟性採種用途，在亞熱帶地區由於平地冬季低溫不足，採用結球後開花育種方式較為困難，因此利用苗期人工低溫春化處理可做為甘藍育種手段，達成種子到種子的世代增進目標，由於甘藍屬異交作物及蟲媒授粉特性，欲保持品種純度採用種子到種子育種方法必須進行較高標準的隔離及去雜工作，不似結球後開花育種方法可在結球期選拔採種母株，因此亞熱帶甘藍種子到種子育種方法若在適當世代之後，進行結球性狀調查後，選取母株再以營養繁殖方式扦插取芽後，進行親本純化工作，應有助於種子純度。

並列摘要

Two seed production methods of cabbage were applied in cabbage breeding. In order to improve seed purity, the traditional head-to-seed is the major method during the breeding program. However, the cold period of winter season in the subtropical lowland can not vernalize headed cabbage plants to induce flowering. Therefore, Tainan District Agricultural Research and Extension Station had developed an artificial vernalization treatment, which make the seed-to-seed method feasible in the cabbage breeding program. The alternative breeding method may impair the seed purity due to the out-cross nature of cabbage, in order to improve the seed purity, the cuttings of the selected headed plants were used as young plants in the seed-to-seed breeding method. The application of molecular markers using single-seed PCR-RFLP may offer the other way to improve the seed purity in the future.