CAJ | 학술논문

选用不同类型的5个糯玉米自交系，测定了其花丝伸长速度、花丝抽出苞叶数目以及吐丝后不同时期授粉结实数，结果表明：无秃尖类型自交系花丝伸长速度较一致，花丝抽出苞叶的时间较早、集中，花丝伸长1 cm后的第3天，花丝就全部抽出苞叶；第2天授粉结实数就显著增加，第3天授粉结实数接近于最大值；第5天、第6天后结实数开始显著下降。有秃尖、长穗型自交系的花丝伸长速度在试验的6d中缓慢提高，抽出苞叶的花丝数目较少，持续时间长，前7d的结实数缓慢升高，后逐渐降低。因此，在糯玉米组合选配时，选择少秃尖自交系作母本，制种时尽可能使父本盛花期在母本吐丝后的第3天至第5天，从而提高制种产量。
선용불동류형적5개나옥미자교계，측정료기화사신장속도、화사추출포협수목이급토사후불동시기수분결실수，결과표명：무독첨류형자교계화사신장속도교일치，화사추출포협적시간교조、집중，화사신장1 cm후적제3천，화사취전부추출포협；제2천수분결실수취현저증가，제3천수분결실수접근우최대치；제5천、제6천후결실수개시현저하강。유독첨、장수형자교계적화사신장속도재시험적6d중완만제고，추출포협적화사수목교소，지속시간장，전7d적결실수완만승고，후축점강저。인차，재나옥미조합선배시，선택소독첨자교계작모본，제충시진가능사부본성화기재모본토사후적제3천지제5천，종이제고제충산량。
In this study , five different types of waxy maize inbred lines were selected and used , and their filament elongation speed, number of filaments drawing out from bracts , and number of pollinated seed setting in different periods after silking were de-termined.The results showed that:for inbred lines without bald tip , their filament elongation speed was relatively uniform , and the time when their filaments drew out from their bracts was earlier and more intensive;the filaments completely drew out from bracts on the third day after filaments elongated by 1 cm;the number of pollinated seed setting increased obviously on the second day after sil -king, and was close to the maximum on the third day after silking , but it began to decrease markedly during 5~6 days after silking. For inbred lines with bald tips and long ears , their filament elongation speed increased slowly in 6 days’ experiment;the number of filaments drawing out from bracts was less , and they drew out for a longer time;the number of pollinated seed setting increased slow-ly during 0~7 days after silking, and then declined gradually .Thus, in the breeding and selecting of waxy maize combinations , the inbred lines with little bald tips should be selected as female parent;in the high-yielding seed production of waxy maize combina-tions, we should as much as possible make the full -bloom stage of male parent be on the 3rd~5th day after the silking of female parent.