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棉花生产上用健壮的种子进行播种,是实现一播全苗,优质高产,降低成本,增加经济效益的内因。准确、简易的种子检验方法和标准,能够保证健壮种子用于生产实践。据棉花种子检验中存在的一些问题,设计进行了种子壮子率试验.壮子是指棉花成熟种子在发芽试验中能产生侧根的发芽种子,壮子率是壮子数占试验种子总数的百分率。本研究以翼棉12号成熟种子,经人工加速老化制备的7个不同活力的种子批为材料,进行玻璃板发芽试验,观察了发芽率、胚根长、侧根数、无侧根发芽种子数、有侧根发芽种子数和未发芽种子数等。同对进行了种子电导率(活力指标)测定和田间播种试验.用各个性状的试验平均值计算了性状间的相关系数,与田间出苗率相关系数以壮子率最大.另外,用翼棉12号和翼棉9号两个品种的7个种子批进行培养皿发芽试验,证明与翼棉12号玻璃板发芽结果相同.最后,还用建立的回归方程,进行估测出苗率与实际出苗率差值的显著性测验,证明差异均不显著,但极差和标准误以壮子率估值最低.结论:棉花种子壮子率与发芽率和电导率相比,更能准确地检验出棉花种子播种品质的真实情况. 在发芽试验过程中,随时将产生侧根的发芽种子拣出,试验结束时,数计未发芽种子和无侧根发芽种子数,从试验总种子数中减去,得壮子数,进而计算出壮子率。方法简单,容易掌握,适宜推广。应用方程计算的各级棉花种子的壮子率可作检验定级时参考。
Cotton production with robust seeds for sowing, is to achieve a broadcast seedlings, high-quality high-yield, reduce costs and increase economic efficiency of the internal. Accurate, easy seed testing methods and standards to ensure that robust seeds are used in production practices. According to some problems existing in cotton seed testing, we designed the test of seed-to-seed ratio, which refers to the germinating seed that can produce lateral root in mature cotton seed, which is the percentage of the total . In this study, seven different vigor seed batches of mature cotton seed of Pian Mian 12, which were prepared by artificial accelerated aging, were used to study the germination of glass plates. The germination rate, radicle length, lateral root number, There are lateral root germinating seeds and the number of non-germinating seeds. Seed conductivity (vigor index) and field sowing tests were performed in the same pair.The correlation coefficient between the traits was calculated by the experimental average of each trait, and the correlation coefficients with the seedling emergence rate in the field were the highest in the Zhuangzi rate.Furthermore, And Wing Mian 9 two varieties of seven seed batch Petri dish germination test proved the same with the Wing Mian 12 glass plate germination results.Finally, the established regression equation was also used to estimate the emergence rate and the actual emergence rate Significant differences in the test showed that the difference was not significant, but very poor and standard error to Zhuangzi the lowest valuation.Conclusion: Cotton seed and seed ratio and germination rate and conductivity compared to more accurately test the cotton Seed sowing quality of the real situation in the sprouting test process, at any time will produce lateral root sprouting seed picking, the end of the test, the number of non-germinating seeds and non-lateral root germination seed number, subtracted from the total number of seeds test, Number of children, and then calculate the rate of Zhuangzi. Method is simple, easy to grasp, suitable for promotion. Application of the formula calculated at all levels of cotton seed Zhuizi rate can be used for reference when testing grading.