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Đánh giá khả năng kết hợp và ưu thế lai của sáu dòng khổ qua (Momordica charantia L.) tự phối đời S5

Bài viết Đánh giá khả năng kết hợp và ưu thế lai của sáu dòng khổ qua (Momordica charantia L.) tự phối đời S5 trình bày đánh giá khả năng kết hợp và ưu thế lai của sáu dòng khổ qua tự phối đời S5 nhằm xác định các dòng làm bố, mẹ phù hợp trong sản xuất giống khổ qua ưu thế lai phục vụ sản xuất. | 48 Trường Đại học Nông Lâm TP. Hồ Chí Minh Evaluation of combining ability and heterosis of six bitter gourd Momordica charantia L. self-pollinated lines at S5 generation Nien C. Nguyen Duyen T. T. Nguyen amp Gam H. Pham Faculty of Agronomy Nong Lam University Ho Chi Minh City Vietnam ARTICLE INFO Research Paper ABSTRACT Received September 25 2021 Research and production of hybrid seed for bitter gourd are still limited in Revised December 12 2021 Vietnam. It is difficult for creating inbred lines and determining combining Accepted December 15 2021 ability and heterosis crosses because hybrid seed production is highly time- consuming. The objective of this study was to determine bitter gourd inbred lines with high combining ability and heterosis. The single factor Keywords experiment was laid out in a randomized complete block design RCBD . There were 22 treatments including six bitter gourd inbred lines at S5 Bitter gourd Momordica cha- generation 15 single crosses and Vino Galatico - S2 variety control with three replications each. The results indicated that seven crosses named D9 rantia L. Ö D8 A2 Ö D8 A3 Ö D8 A2 Ö D9 A4 Ö A2 A1 Ö A2 and A1 Ö A4 Combining ability were similar to or higher than the control in the analysed parameters such Crosses as fruit size fruit weight and harvested yield. The D9 and D8 lines were Heterosis identified in hybrid superiority used for male or female parent with high Self-pollinated lines heterosis. The A1 and A2 lines were found appropriate in male and female parents respectively. The A1 Ö A2 cross showed good value of specific Corresponding author combining ability for total fruits per plant and harvested yield. Moreover the values of heterosis for fruit length total fruits and harvested yield were Nguyen Chau Nien higher than 10 percent. Email nien.nguyen@hcmuaf.edu.vn Cited as Nguyen N. C. Nguyen D. T. T. amp Pham G. H. 2022 . Evaluation of combining ability and heterosis of six bitter gourd Momordica charantia L. .