綠色性狀聚合育種

牟同敏 周少川 李澤福 戴陸園 余新橋

摘 要：該文緊緊圍繞綠色超級(jí)稻的目標(biāo)，開展了綠色超級(jí)稻新材料的創(chuàng)建和新品種選育，同時(shí)開展大面積示范推廣。育成抗2-3主要病蟲害綠色超級(jí)稻品種10個(gè)，育成節(jié)水抗旱新品種2個(gè)，示范推廣面積465萬畝。創(chuàng)建具有綠色超級(jí)稻性狀的新材料131份，其中導(dǎo)入Xa23基因、高抗白葉枯病的株系材料10份，導(dǎo)入Pi-2、Pi-9基因、廣譜抗稻瘟病的株系材料8份，導(dǎo)入Bph14、Bph15基因、抗褐飛虱的株系材料36份，聚合Bph14、Bph15、Cry1Ab/Ac基因、同時(shí)抗褐飛虱和螟蟲的株系材料16份，通過苗期水培法，對(duì)創(chuàng)制的OZ057和皖恢821導(dǎo)入系進(jìn)行低氮、磷營養(yǎng)脅迫，利用苗期根、莖相對(duì)性狀指數(shù)，篩選出32份耐低氮、低磷導(dǎo)入系株系，篩選出高產(chǎn)抗旱耐鹽聚合新品系29份。

關(guān)鍵詞：綠色超級(jí)稻 綠色性狀 新材料 新品種

Abstract：The purposes of the project were to develop the green super rice materials and varieties and to carry out the demonstration and extension of green super rice. Ten green super rice varieties with resistance to two or three kinds of deseases and pests and two drought tolerant rice varieties were developed during project conduction phase. The demonstration and extesion area under green super rice were 0.31 million hectare. 131 green super rice materials were developed. Of them， ten new materials bearing Xa23 were highly resistant to blight bacterial， ten new materials bearing Pi2 or Pi9 were resistance to rice blast， and sixteen new materials harboring Bph14， Bph15 and Cry1Ab/Ac were resistant to brown planthopper and stemborer. The introgression lines between OZ057 and Wanhui 821 were identified under the conditions of low nitrogen and phosphorus nutrition stress through the seedling hydroponics. 32 introgresion lines with tolerance to nitrogen and phosphorus and 29 breeding lines with salt tolerance and high yield were selected by using seedling root， stem relative character index.

Key Words：Green Super Rice； multi-resistance Traits；New Breeding Lines；New Varieties

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