Plant physiology - Chapter 24 The Control of Flowering pdf

... examine some of the character- istics of the cold requirement for flowering, including the 580 Chapter 24 FIGURE 24. 25 Vernalization induces flowering in the win- ter-annual types of Arabidopsis ... length R R FR FR R R R FR FR R Long-day (short-night) plant Short-day (long-night) plant FIGURE 24. 22 Phytochrome control of flowering by red (R) and far-red (...

Ngày tải lên: 16/03/2014, 22:20

... abundant on the lower surface of the leaf. On its way from the leaf to the atmosphere, water is pulled from the xylem into the cell walls of the mesophyll, where it evaporates into the air spaces of the ... Climbs to the Top of a 112-Meter- Tall Tree Measurements of photosynthesis and transpira- tion in 112-meter tall trees show that some of the conditions ex...

Ngày tải lên: 20/02/2014, 01:20

... be transported to the rest of the plant via the phloem. Inter- mediates of gibberellin biosynthesis may also be translo- cated in the phloem. Indeed, the initial steps of gibberellin biosynthesis may ... AMO-1618 Control AMO-1618 AMO-1618 + GA 20 AMO-1618 + GA 1 30 10 20 0 12 Stem length (cm) 40 14 16 18 20 22 24 (B) BX-112 Number of long days Control BX-112 BX-112 +...

Ngày tải lên: 16/03/2014, 22:20

... muta- tion of the T-DNA of the Agrobacterium Ti plasmid (Garfinkel et al. 1981). Mutat- ing the ipt gene (the tmr locus) of the Ti plasmid blocks zeatin biosynthesis in the infected cells. The ... promoters, none of the T-DNA genes are expressed in the bacterium; rather they are transcribed after they are inserted into the plant chromosomes. Transcription of t...

Ngày tải lên: 16/03/2014, 22:20

... TCNCYH 28 (2) - 2004 Một số thuốc mới chống rối loạn lipid máu (New drugs for the control of dyslipidemia) GS. TSKH. Hoàng Tích Huyền* Nhóm statin ức chế HMG - COA - reductase Lịch ... Statub ức chế enzym 3 - hydroxy - 3 - methylglutazyl coenzym A (HMG - COA) reductase nên kìm hãm sự tổng hợp cholesterol nội sinh, làm tăng tổng hợp các thụ thể của...

Ngày tải lên: 26/02/2014, 03:20

... photoperiod (called the end -of- day far-red response ). Both of these responses are likely to involve per- ception of the Pfr:Ptotal ratio and occur in the low-fluence region of the spectrum. Although ... the far- red content, it was found that for so-called sun plants (plants that normally grow in an open-field habitat), the higher the far-red content (i.e., the lower...

Ngày tải lên: 07/03/2014, 21:20

... picture of the overall organization of the mem- branes in the chloroplast. The chloroplast of higher plants is surrounded by the inner and outer membranes (envelope). The region of the chloro- plast ... trans- fers its other electron to one of the b-type hemes, releasing both of its protons to the lumenal side of the membrane. The b-type heme transfers its...

Ngày tải lên: 20/02/2014, 01:20

... section: 24. 26 Figure 24. 16 FIFO queue 24. 27 Figure 24. 17 Priority queuing 24. 28 Figure 24. 18 Weighted fair queuing 24. 29 Figure 24. 19 Leaky bucket 24. 2 2 4-1 DATA TRAFFIC 2 4-1 DATA TRAFFIC The main ... BECN 24. 21 Figure 24. 13 FECN 24. 22 Figure 24. 14 Four cases of congestion 24. 23 2 4-5 QUALITY OF SERVICE 2 4-5 QUALITY OF SERVICE Quality of servi...

Ngày tải lên: 06/03/2014, 12:20

... the other nod genes. The first stage in the formation of the symbiotic rela- tionship between the nitrogen-fixing bacteria and their host is migration of the bacteria toward the roots of the ... of specific signals, the induction of a specialized developmental program within the plant, the uptake of the bacteria by the plant, and the development of...

Ngày tải lên: 07/03/2014, 20:20

... in the more alka- line compartments of the cell. The distribution of IAA and its metabo- lites has been studied in tobacco cells. About one-third of the IAA is found in the chloro- plast, and the ... components. In this case the struc- tural components consist of the meshwork of actin micro- filaments that form part of the cytoskeleton of the central columell...

Ngày tải lên: 16/03/2014, 22:20