论文部分内容阅读
经过固定光照 (12 h,2 5 min)和随后的递减光照 (递减率 15 s或 30 s/ d)等处理 ,诱导甘蔗属热带种的 Badila、IJ76 - 315等品系和甘蔗属中国种的广东竹蔗、江西竹蔗等品系开花 ,用作母本 ;采取调整种植期、剪叶等措施 ,延迟甘蔗属的割手密和蔗茅属的斑茅开花 ,用作父本。实施热带种与割手密 ,热带种与斑茅 ,中国种与割手密 ,中国种与斑茅的远缘杂交。杂交颖果培育的实生苗 ,种植于山坡大田中 ,通过常规的杂种圃和选种圃 ,以农艺性状优良、抗病耐旱为准则 ,选择到 2 1个单系。入选单系 ,经受一项干旱胁迫致死的处理 ,筛选最耐旱者 ,结果崖城 95 - 41最耐旱 ,崖城 96 -6 8、 95 - 18次之。经同工酶分析和形态学的比较 ,崖城 95 - 41是热带种 Badila与斑茅的杂种
After fixed illumination (12 h, 25 min) and subsequent decrease of illumination (decreasing rate of 15 s or 30 s / d) and other treatments, Badila, IJ76 - 315 and other strains of sugarcane genus and Chinese species of sugarcane of Guangdong Bamboo cane, Jiangxi bamboo cane and other lines flowering, used as a female parent; to adjust the planting period, cut leaves and other measures to delay cactus cut calamus and Ctenocephalus Mao Mao bloom, as a male parent. The implementation of tropical species and cut the secret, tropical species and spot Mao, Chinese species and cut the secret, Chinese species and dactylidae distant hybridization. The seedlings of hybrid caryopsis were planted in the hillside fields. Through conventional hybrid nurseries and seed selection nurseries, 21 monocotyledons were selected with the criteria of excellent agronomic characters and disease resistance and drought tolerance. Selected single line, subjected to a lethal treatment of drought stress, screening the most drought-resistant, the results Yacheng 95 - 41 the most drought-resistant, Yacheng 96-6 8, 95-18 times. By isozyme analysis and morphological comparison, Yacheng 95 - 41 is a hybrid of tropical species Badila and