半矮蔓西葫芦新品种东葫2号的选育

A New Semi-bush Summer Squash F_1 Hybrid—‘Donghu No.2’

东葫2号是以冬玉经7代自交纯合选育出的02-8A白皮自交系为母本,以国外材料经5代自交分离选出的稳定的绿皮自交系,与国内黑龙江小白皮杂交,再自交纯合得到的早熟自交系9601-4B为父本,配制而成的早熟丰产半矮蔓西葫芦一代杂种。该品种植株生长势强,早熟性好,植株后期不早衰;瓜长筒形,纵径23～25cm,横径6～7cm,瓜皮翠绿色,光泽度好;田间表现对病毒病、霜霉病和白粉病的抗性比对照早青一代强。露地栽培每667m2产量4500～5000kg,保护地栽培每667m2产量6000kg左右。适于我国北方露地和日光温室栽培。

‘Donghu No. 2＇ is a new early-maturing and high-yielding semi bush summer squash F1 hy-brid bred by crossing white skin inbred line 02 -8A from‘Dongyu＇ as female parent and green skin inbred line 9601 -4B from foreign and home hybrid as male parent. It is an early mature variety with strong growth vigor at late development stage. The fruit is long cylindrical with length of 23 -25 cm and diameter of 6 -7 cm. The fruit skin is light green and very glossy. The plant has stronger resistance to viruses, downy mildew and powdery mildew than ＇Zaoqingyidai＇. It yields 67.5 -75.0 t·hm^-2 in open field and 90 t·hm^-2 in greenhouse. It is suitable to be cultivated in open field and greenhouse in Northern China.