5460 fertility conversion of nuclear male sterile

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5460 fertility conversion of nuclear male sterile line of the plant traits sensitive microspore development and the relationship between

Of different temperature and light treatment has not found differences in cell morphology (Plate A, B, C, D and G, H,[link widoczny dla zalogowanych], I, J). To the single-core post, between the different treatments showed significant differences. At high temperatures,[link widoczny dla zalogowanych], long days, the most severe cell shrinkage phenomenon, has been stuck in single-core later, these small spores can not continue development of the dual-core (Plate E), the final disappearance of the small inclusions of spores formed irregular folds of the circular air bag material that develop into normal mature pollen grains (Plate M, N). OO3O235383 Ⅲ m 3 Xiao Yu Duo, and other commitments: 5460-sensitive genic male sterile line of fertility conversion of plant traits and the relationship between microspore development 5 Figure 2A ~ F, long-day, high-ju 5460, Department of braces is not green pollen development GuN , short day, often disheartened by 5460 Prism pollen development is not green line Fig. 2ThepollendevelopmentsofTGMS5460underdifferenttreatmentsA: pollen mother cell 'B: dyad' C: tetrad {D: single-edge early-, medium-IE: Single-edge pull over on the F: sterile pollen grains G: pollen mother cells' H: dyad I: IV Split 'J: pile early and mid-term; K; single edge aside on; L: double post earlier; M; plot edge late N: Mature flower bad particles under natural conditions in Fuzhou, early indica 5460 temperature (light) sensitive genic CMS, from sowing to heading 70 ~ 80d, height 75cm, bag neck, the total number of 15 or so leaves, flag leaf length 38cm, spike length 25cm, about 125 grains per spike. Pollen fertility under high temperature performance of sterile, room temperature (low temperature) is manifested in lower fertility. With good grain quality, disease resistance and strong higher Stigma and so on. In the artificial climate chamber conditions, the 5460 fertility conversion of nuclear male sterile lines before heading away from the sensitive period of about 11d (Cai Mai et al, 1990). Under natural conditions, the nuclear male sterile lines of the sensitive stage of fertility transition before heading away from the 12d (Young home-tin, 1990). The results of this study show that: 5460 nuclear male sterile lines from the plant leaf pillow in 0.1 ~ 8.6cm, panicle length of 7.6 ~ 14.5cm, before heading away from the range of 9.0 to 13.4d, Variable temperature from room temperature or by temperature changes at room temperature, pollen fertility are subject to change; that the plant traits in nuclear male sterile line for the sensitive stage of fertility transition. This indicator is just within the tetrad microspores to develop to the early dual-core. This also confirms our conditions in the artificial climate chamber of the findings, the fertility-sensitive period of transition to a dual-core early tetrad between (Xiao Cheng and et al, 1995). 5460 nuclear male sterile line in the sensitive stage of fertility transition, high temperature or room temperature processing 1d, fertility to infertility or to changes in fertility, continuous Fujian Academy of Agricultural Sciences Vol 10 treatment of 5d,[link widoczny dla zalogowanych], the main ear spikelet full conversion of all into sterile or fertile, than in the artificial climate chamber under the conditions of the time required for complete conversion longer. This is mainly due to temperature and light conditions are different, because the artificial climate chamber is heated, short photoperiod, and under natural conditions is the temperature, long day, it completely changed the time of the corresponding longer. However, the degree of sensitivity to temperature and point of view, this type of nuclear male sterile line in the natural temperature and light conditions, ld more cooling or high temperature,[link widoczny dla zalogowanych], will affect the fertility of pollen, resulting in seed purity is not high, or reproductive output decreased. Therefore,[link widoczny dla zalogowanych], in the sensitive stage of fertility transition experienced sudden cooling, artificial control measures must be taken.