Dutch giant US special tomato seeds \ quality tomato seeds

Dutch giant US special tomato seeds Netherlands introduced a generation hybrids, pink fruit unlimited growth type, continuous fruiting ability, large fruit, good hardness, shiny dark red fruit color, fruit weight 400g, large fruit up to 800g or more. Plants are growing strong, strong resistance, resistance to low light, water and fertilizer management giant high yield potential. Early spring is a winter greenhouse sized shed, ideal replacement autumn delayed planting varieties. Tomato seed tomato seed production of conventional varieties are self-pollinating crops, but under natural conditions phenomenon occurs outcrossing outcrossing species or mechanical mixing can lead to decreased uniformity, general purification method using single plant selection and mass selection. When seed production isolation distance requirements 100 ~ 300m. 1. Three-field method for uniformity is poor, mixed breed more serious degradation of this method can be purified. Program follows. (1) Select the tomato plant. When farming or mining Tanaka in the early fruit production, the flourishing and harvest, selection of fine individual has traits typical of the breed are labeled, out of the performance of poor and susceptible plants, the plant will be selected seed and number respectively . (2) strain line identification. Seeds of each species were selected strains under adult line, observed during the reproductive traits typical of each strain lines and uniformity, to choose the characteristics typical of the breed has neat rows of good lines, line by line harvested seed and number. (3) Comparison of lines. The species were selected strains of seeds each year into cell lines, namely lines garden, after a comparative study, to choose with a typical trait of the breed, high yield, strong adaptability, consistent neatly within the lines of good plant. Each selected strains of seeds harvested plant can also be mixed harvest. (4) mixed with inbreeding. Sowing the seeds last year will be selected in the original species nursery, nursery stock requires a secure isolation. Rigorously to the complex to go after bad seed is the original species collected. 2. Two nursery method when relatively light tomato hybrid varieties, high purity, we can use this method. The method is to stay in farming, before the first harvest, more choices are excellent markers of the listed plant species typical traits. Strictly eliminate undesirable traits plant fruit harvest, the selected good fruit harvest is the original mixing plant species. Tomato varieties after several generations selfing sometimes viability decline of the phenomenon, can be used in the method of hybrid varieties of rejuvenation. The method is to stay in farming in the inner ear in the first before flowering select several fine individual marks. In the afternoon the day before or the morning of flowering anther not loose before, artificial emasculation. The selected strain off the anthers concentrated in a small petri dish or a clean tray, with sharpened rubber head, dipped to male pollen on the pistil lightly coated, artificial pollination, and mark. Finally, from the selected strain after picking fruits pollinated flower emasculation of the knot of mixed seed, hybrid seed varieties within this harvest, the life force has improved to some extent.