蝴蝶蘭花朵丑斑花色之遺傳

Inheritance of Harlequin Type in Phalaenopsis Orchids

林全成(Chuan-Cheng Lin) ； 徐善德(Shan-Te Hsu) ； 沈再木(Tsai-Mu Shen)

《植物種苗》 9卷4期 (2007/12) Pp. 47-59

https://doi.org/10.30077/SN.200712.0004

摘要

本研究以具丑斑（harlequin type）與不具丑斑花色的蝴蝶蘭進行雜交，探討蝴蝶蘭花朵丑斑表現型的遺傳行為。結果顯示，花朵不具丑斑表現型的Phalaenopsis Sunrise Red Peoker‘#1’和Phal. Brother Stage‘#1’兩親本，其正反交子代的花朵表現型皆不具丑斑。而花朵表現型為丑斑的Phal. Sunrise Red Peoker‘#2’親本，分別與不具丑斑表現型的Phal. Brother Stage‘#1’、Phal. I-Hsin Peacock ‘KHM063’、Phal. Ching Her Buddha‘KHM128’及Phal. Fashion Little Star‘#1’雜交，其子代花朵具丑斑與不具丑斑的植株比率，分別為99：100、24：19、87：101及11：16，其結果接近預期的1：1基因分離比。當Phal. Sunrise Red Peoker‘#2’與其母本Phal. Golden Peoker‘BL’回交時，其子代花朵具丑斑與不具丑斑的植株比率48：15，結果接近預期的3：1基因分離比。採用卡方法測驗假說的結果顯示，蝴蝶蘭花朵的丑斑表現型相對於不具丑斑者為顯性，且可能是由單一基因座所控制。

關鍵字

蝴蝶蘭 ； 丑斑 ； 遺傳

並列摘要

To study the inheritance of harlequin trait, Phalaenopsis orchids were used as parents for crossing materials. The results showed that hybrids from reciprocal crosses between Phalaenopsis Brother Stage '#1' and Phal. Sunrise Red Peoker '#1' (both non-harlequin types) were all non-harlequin type. However, the hybrids from crosses between harlequin type (Phal. Sunrise Red Peoker '#2') and non-harlequin type (Phal. Brother Stage '#1', Phal. I-Hsin Peacock 'KHM063', Phal. Ching Her Buddha 'KHM128' and Phal. Fashion Little Star '#1') showed 99:100, 24:19, 87:101 and 11:16 ratios of harlequin type to non-harlequin type, respectively. These results approximate the expected genetic segregation ratio of 1:1. When Phal. Sunrise Red Peoker '#2' adopted as a male parent and back crossed to Phal. Golden Peoker 'BL', hybrids produced 48:15 ratio of harlequin type to non-harlequin type. This result approximated the expected genetic segregation ratio of 3:1. Results suggested that harlequin type of Phalaenopsis flower was dominant to non-harlequin type, and might be genetically determined at a single locus. The hypotheses were tested using the chi-square method.

並列關鍵字

phalaenopsis ； harlequin ； inheritance