王建龍 賈先勇 徐叔云 吳立群 李珊

摘 要：該研究從選育育性轉(zhuǎn)換低起點溫度的不育系及品種開始，通過株系育性鑒定保純法原種生產(chǎn)技術(shù)生產(chǎn)不育系核心種子，研究了兩用核不育系低緯度高海撥繁殖、海南繁殖、冷灌繁殖、割蔸繁殖等多種繁殖方法，形成了規(guī)范化技術(shù)，再通過計算機氣象模擬系統(tǒng)按照“三期安全”的要求進行制種地點和季節(jié)的選擇，并結(jié)合先進的制種技術(shù)形成高產(chǎn)制種技術(shù)規(guī)范等一整套技術(shù)流程。該研究促進了兩系不育系和兩系雜交稻新品種的選育，育成了691S、川粳S、007S和建S等不育系，選育出了C兩優(yōu)343、株兩優(yōu)173、陸兩優(yōu)1733等10多個兩系雜交稻品種通過國家和省級審定；研究和完善了海南繁殖、割蔸繁殖、冷灌繁殖技術(shù)，提出了低緯度高海拔繁殖技術(shù)方案，最高單產(chǎn)達9 075 kg/h。

關(guān)鍵詞：兩系雜交稻 繁殖 制種

Abstract：This study， commencing from breeding sterile lines and varieties of fertility transition at a low starting point temperature， produced sterile line core seed by strains sterility identification，the guaranteed pure method seed production technique .To study the breeding methods of dual-use nuclear sterile lines under different condition of the low latitude and high elevation， Hainan ， cold irrigation and stump cutting ，to conduct the choice of seed production site and season according to requirements of "Three Periods of Security" via the computer meteorological simulations system and to combine with advanced seed production technology formed a set of technical processes.The research promoted the new varieties breeding of two-line Sterile lines and two-line hybrid rice， which bred 691S， Chuanjing S， 007S and Jian S etc.CMS ， and bred more than ten of two-line hybrid rice varieties， C Liangyou 343， Zhuliangyou 173 and Luliangyou 1733 etc， which had passed national and provincial approval； To study and improve the breeding technology of Hainan， stump cutting， cold irrigation， and to put forward breeding technical solutions of low latitude and high elevation， which of the highest yield was up to 9 075 kg/h㎡.

Key Words：Two-line Hybrid Rice；Breeding；Seed Production

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