籽用美洲南瓜新品种“金龙瓜1号”的选育

Breeding of New Seed-used Cucurbita pepo Variety ‘Jinlonggua 1'

籽用美洲南瓜"金龙瓜1号"是杂交一代短蔓、高产、抗病新品种。母本‘GM’是黑龙江省优良短蔓自交系,父本‘GF’是由俄罗斯引进高产抗病材料选育而成。"金龙瓜1号"属中熟品种,生育日数105 d左右,需≥10℃活动积温2 300℃以上;植株短蔓,生长健壮,叶片浓绿,单株坐瓜1~2个,瓜长圆球形,横径18~25 cm,纵径30~40 cm,单瓜质量3.9~5.0 kg。瓜籽长1.9 cm,宽1.3 cm,公顷产籽量1 250 kg。田间表现抗白粉病、霜霉病,适合在黑龙江省推广。

Jinlonggua 1＇ is a new seed used Cucurbita pepo F1 hybrid variety with short-vine, high yield and disease-resistant. Female parent ＇GM＇ was chosen in excellent short-vine inbred lines from Heilongjiang,and male parent ＇GF~ was breed by high yield inbred lines from Russia. Its accumulated temperature is 2 300℃ and need 105 growing days,it is a medium mature variety. Short vine, strong growth, dark green leaves and oval-shape fruit are presented in ＇Jinlonggua 1 ＇, 3.9- 5.0 kg in weight,18--25 cm in transverse diameter and 30--40 cm in longitudinal diameter are measured in single fruit. Meanwhile 1.9 cm in length and 1.3 cm in width are detected in seeds of fruit with 1 250 kg · hm^-2 in average yield of seeds. Resistance to powdery mildew and downy mildew are also found in ＇Jinlonggua l＇. It is demonstrated that the new variety ＇Jinlonggua 1＇ is suitable for Heilongiiang Province.